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		var questions = [{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["9\/13"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the following rational numbers in standard form :","option":["18\/26"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["-1\/6"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the following rational numbers in standard form :","option":["- 6\/36"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["-1\/2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the following rational numbers in standard form :","option":["7\/- 14"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["-1\/-8"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the following rational numbers in standard form :","option":["- 3\/- 33"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["1\/-8"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the following rational numbers in standard form :","option":["- 5\/40"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["(a) > (b) < (c) > (d) <."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Compare the following rational numbers and fill in the boxes with >, < or = sign:","option":[""],"image":"17166361661.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["-5\/6, - 1\/2, - 5\/11, 3\/5, 4\/5"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write in ascending form :","option":["5\/6 , 5 -11 , 1 -2 , 4 5 , 3 5"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["4\/5, 3\/4, 2\/13, 2\/- 9, - 5\/8"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write in descending form","option":["2\/13, 4\/5, - 5\/8, 3\/4, 2\/- 9"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["Do it yourself"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Verify the commutative property of addition for the following rational numbers:","option":[""],"image":"17166363171.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Verify that (a + b) + c = a + (b + c) , where:","option":[""],"image":"17166363681.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17166365402.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the additive inverse of the following numbers:","option":["(a) 25\/27 (b) - 16\/- 21 (c) 0 (d) 5\/- 11"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["(a) Commutative property (b) Associative property (c) Commutative property (d) Associative property (e) Commutative property"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Name the properties of addition in each of the following cases:","option":[""],"image":"17166366151.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["(a) * 31\/28 * (b) * 11\/56 * (c) * 23\/20 * (d) * 1\/12 *"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the difference between:","option":[""],"image":"17166367051.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["Do it yourself."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"In each of the following, show that a-b ne b - a ;","option":[""],"image":"17166367871.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["Do it yourself."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"In each of the following, show that a -(b-c) ne (a - b) - c .","option":[""],"image":"17166368381.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["-17\/15"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the Blanks :","option":[""],"image":"17166369461.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["-9\/13"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the Blanks :","option":[""],"image":"17166369881.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["-11\/14"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the Blanks :","option":[""],"image":"17166370321.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17166370942.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Simplify:","option":[""],"image":"17166370941.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["11\/12"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Simplify:","option":[""],"image":"17166371361.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17166372652.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the following products:","option":[""],"image":"17166372651.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Verify ab = b :","option":[""],"image":"17166373081.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Verify *(b* c)= (ab) * cfor :","option":[""],"image":"17166373431.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Verify a(b + c) = (ab) + (ac) * for :","option":[""],"image":"17166374061.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17166375312.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the multiplicative inverse (or reciprocal) of the following:","option":[""],"image":"17166375311.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17166375892.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Using distributive property of multiplication of rational numbers over addition\/subtraction, simplify the following:","option":[""],"image":"17166375891.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17166376922.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the missing rational numbers. Also state the property used:","option":[""],"image":"17166376921.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17166378012.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Divide:","option":[""],"image":"17166378011.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17166379402.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Simplify and express your answer as a rational number in the standard form:","option":[""],"image":"17166379401.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Show that a\/(b\/ c) ne (a \/ b) \/ c , for:","option":[""],"image":"17166379961.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["15\/11"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"fill in the blanks :","option":["The product of two rational numbers is 40\/55 If one of the numbers is 8\/15 find the other number."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["-49\/44"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"fill in the blanks :","option":[""],"image":"17166380891.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["-88\/125"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17166381431.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["-133\/432"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17166381921.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["23\/2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17166382261.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17167898312.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Represent the following rational numbers on the number line :","option":[""],"image":"17167898311.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17167898892.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the rational numbers represented by the labelled points:","option":[""],"image":"17167898891.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17167900142.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Write four rational numbers less than 2."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17167900462.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Write three rational numbers between - 2and - 1"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17167900842.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Write four rational numbers between - 2\/3 * an * d * 1\/4"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17167901132.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Write five rational numbers between 6\/8 * an * d * 7\/8"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["500KM."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A train at a uniform speed covers a distance of 350 km in 3 1\/2 hours hours. Find the speed of the train and the distance covered in 5 hours."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["2001\/504HOURS"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A car is travelling with a speed of 50 2\/5 km\/h. How much time will it take to travel the distance of 200 km 100 m?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17167902482.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Tiya had a piece 17\/15 * c 16\/3 9 of ribbon. She cut the ribbon into four pieces measuring cm, 4 cm, 12\/10 cm and . Find the length of the ribbon."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17167903072.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17167903071.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Rational Numbers","type":"Fill in the blanks","answer":["17167903652.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17167903651.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167905012.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Express the following powers of rational numbers as rational numbers:","option":[""],"image":"17167905011.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167906352.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Express each of the following rational numbers in power notation:","option":[""],"image":"17167906351.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167907612.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert negative exponents to positive exponents in the following:","option":[""],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167908212.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the multiplicative inverse with negative exponents for the following:","option":[""],"image":"17167908211.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167908762.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Simplify the following:","option":[""],"image":"17167908761.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167909872.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Simplify and write the answer in exponential form:","option":[""],"image":"17167909871.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167911252.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Simplify and write the answer in exponential form:","option":[""],"image":"17167911251.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167912582.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Simplify each of the following:","option":[""],"image":"17167912581.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167913782.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write each of the following as a rational number with positive exponent:","option":[""],"image":"17167913781.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167914342.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write each of the following as a rational number with negative exponent:","option":[""],"image":"17167914341.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167914922.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Simplify the following:","option":[""],"image":"17167914921.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167915482.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the value of x, if:","option":[""],"image":"17167915481.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["1\/16"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17167916081.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["-9\/18"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17167916461.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["-1\/12"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17167916861.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["Do it yourself"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Verify the following:","option":[""],"image":"17167917971.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167919042.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17167919041.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167920012.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write in standard form:","option":[""],"image":"17167920011.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167920762.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write in usual form:","option":[""],"image":"17167920761.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167922732.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the numbers appearing in the following statements in their standard form:","option":["The average diameter of a red blood cell is 0.000007 mm."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167923062.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the numbers appearing in the following statements in their standard form:","option":[""],"image":"17167923061.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167923462.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the numbers appearing in the following statements in their standard form:","option":["Average radius of the sun is 695000 km."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167923772.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the numbers appearing in the following statements in their standard form:","option":["Size of a plant cell is 0.00001275 m."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167924082.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the numbers appearing in the following statements in their standard form:","option":["Diameter of a wire on computer chip is 0.000003 m."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["Diameter of wire is approximately one-fourth of the size of the plant cell."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Compare the diameter of a wire on a computer chip which is 0.000003 m to that of a plant cell which is 0.00001275 m."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["The mass of Saturn is 6.54 times the mass of Uranus."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The mass of Saturn is 5.68 * 10 ^ 26 kg and the mass of Uranus is 8.68 * 10 ^ 25 kg. Find the difference between their masses."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Exponents (Powers)","type":"Fill in the blanks","answer":["17167925812.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The distance between Sun and Earth is 1.496 * 10 ^ 11 m and the distance between Earth and Moon is 3.84 * 10 ^ 8 m. During the solar eclipse, Moon comes in between the Earth and Sun. At that time, find the distance between Moon and Sun.."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["225 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers using prime factorisation:","option":["3364"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["225"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers using prime factorisation:","option":["50625"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["750"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers using prime factorisation:","option":["562500"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["108 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers using prime factorisation:","option":["11664"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["84"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers using prime factorisation:","option":["7056"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["333"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers using prime factorisation:","option":["110889"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["98 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers using prime factorisation:","option":["9604"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["8"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers by successive subtraction:","option":["64"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["11"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers by successive subtraction:","option":["121"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["14"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers by successive subtraction:","option":["196"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["9"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers by successive subtraction:","option":["81"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["15"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers by successive subtraction:","option":["225"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["6; 36"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"In each of the following questions, find the smallest number by which it should be multiplied to get a perfect square. Find the square root of the perfect squares so obtained.","option":["216"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["2:64"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"In each of the following questions, find the smallest number by which it should be multiplied to get a perfect square. Find the square root of the perfect squares so obtained.","option":["2048"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["7: 84"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"In each of the following questions, find the smallest number by which it should be multiplied to get a perfect square. Find the square root of the perfect squares so obtained.","option":["1008"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["3:84"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"In each of the following questions, find the smallest number by which it should be multiplied to get a perfect square. Find the square root of the perfect squares so obtained.","option":["2352"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["3; 10"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"In each of the following questions, find the smallest number by which it should be divided to get a perfect square. Find the square root of the perfect squares so obtained.","option":["300"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["2:54"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"In each of the following questions, find the smallest number by which it should be divided to get a perfect square. Find the square root of the perfect squares so obtained.","option":["5832"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["2:27"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"In each of the following questions, find the smallest number by which it should be divided to get a perfect square. Find the square root of the perfect squares so obtained.","option":["1458"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["5:27"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"In each of the following questions, find the smallest number by which it should be divided to get a perfect square. Find the square root of the perfect squares so obtained.","option":["3645"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 61 (b) 96 (c) 49 (d) 111 (e) 106 (f) 212 (g) 99 ( h) 125 (i) 255 (j) 324"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers using long division method:","option":[""],"image":"17167942951.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["45; 45"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["2025 plants are to be planted in a garden in such a way that each row contains as many plants as the rows. Find the number of rows and the number of plants in each row."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["279 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the least number that must be subtracted from 893304 so as to get a perfect square."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["99,856 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the greatest number of five digits, which is a perfect square."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["No: 100."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["5000 chairs are to be arranged in rows and columns, such that the number of rows is equal to the number of columns. Will all the chairs be accommodated in this arrangement? If not, how many will be left out?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 3; 600 (b) 36 (c) 900"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the least number exactly divisible by each one of the following numbers:","option":["(a) 8,9,10 (b) 6, 9, 12 (c) 12, 15, 18"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["231"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the greatest number which must be added to 18265 so as to get a perfect square."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["2800 m"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the perimeter of a square field whose area is 49 hectares. [1 hectare = 10000 m\u00c2\u00b2]"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["17167945352.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the value of the following:","option":[""],"image":"17167945351.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 78 (b) 56 (c) 90 (d) 27.6"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Evaluate the following:","option":[""],"image":"17167945741.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 11.5 (b) 2.8 (c) 0.44 (d) 0.85"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following decimals:","option":[""],"image":"17167946211.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["234; 25.74 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following decimals:","option":[""],"image":"17167946561.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["7.2 m"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The area of a square garden is 51-84 sq. m. Find the length of the side of garden."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["17167947502.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17167947501.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 2 (b) 3 (c) 3 (d) 4"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write a Pythagorean triplet with the following numbers as one of its members:","option":[""],"image":"17167948241.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 1.35 (b) 6.6 (c) 0.333 (d) 4.2 (e) 0.13 (f) 9.52 (g) 5.61 (h) 69.2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the values of the following:","option":[""],"image":"17167949301.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 5.2 (b) 6.5 (c) 9.9 (d) 3.9"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following using the square root table:","option":["(a) 27-04 (b) 42-25 (c) 98-01 (d) 15-21"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 2.24 (b) 3.00 (c) 3.32 (d) 5.00 (e) 6.24 (1) 7.48 (g) 6.93 (h) 9.00 (i) 8.37 (j) 9.70"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following correct upto two decimal places:","option":[""],"image":"17167950161.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 8.49706 (b) 14.45914 (c) 70.71068 (d) 140.87228"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17167950971.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(b), (c), (d), (e)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Which of the following numbers are not perfect squares?","option":[""],"image":"17167928051.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a), (c), (d), (e)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Which of the following numbers are perfect squares?","option":[""],"image":"17167928421.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 14 (b) 5 (c) 11 (d) 2."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the smallest number by which the given number must be multiplied to make it a perfect square:","option":[""],"image":"17167929061.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 7 (b) 5 (c) 2 (d) 75."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the smallest number by which the given number must be divided to make it a perfect square:","option":[""],"image":"17167929701.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 26 (b) 43 (c) 64 (d) 144"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Using prime factorisation, find the number whose square is given:","option":[""],"image":"17167930261.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(c), (e)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Which of the following cannot be perfect squares? Give reasons.","option":[""],"image":"17167931161.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 9 (b) 6 (c) 4 (d) 1 (e) 1"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"What is the ones digit of the following squares?","option":[""],"image":"17167931561.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a), (c)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The squares of which of the following numbers will be odd numbers?","option":[""],"image":"17167931961.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) (5, (b) 49 (c) 19 (d) 55 9. 62 cm 10. 6, 12, 18 12, 13) (b) (7, 24, 25) (c) (16, 63, 65) (d) (11, 60, 61) (e) (15, 112, 113)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write a Pythagorean triplet with the following as one of its numbers:","option":[""],"image":"17167932621.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) (112+113) (b) (480+481)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Write (a) 15 ^ 2 and (b) 31 ^ 2 as the sum of two consecutive natural numbers."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["17167935312.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Observe the pattern and fill in the blanks:","option":[""],"image":"17167935311.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["1020304030201, 101010101"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Observe the pattern and fill in the blanks:","option":[""],"image":"17167935791.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["No"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Using a suitable property of perfect squares, check whether 45 is a perfect square or not?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["(a) 2,209 (b) 841 (c) 7,396 (d) 5,041 (e) 8,464"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the squares of the following numbers using the column method:","option":[""],"image":"17167936711.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["7,921"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the squares of the following numbers using the diagonal method:","option":["89"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["13,225"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the squares of the following numbers using the diagonal method:","option":["115"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["18,496"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the squares of the following numbers using the diagonal method:","option":["136"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["65,536"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the squares of the following numbers using the diagonal method:","option":["256"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["97,344"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the squares of the following numbers using the diagonal method:","option":["312"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["3,249"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the squares of the following numbers using the observation method:","option":["57"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["93,636"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the squares of the following numbers using the observation method:","option":["306"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["11,881 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the squares of the following numbers using the observation method:","option":["109"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["9,604 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the squares of the following numbers using the observation method:","option":["98"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["41,616"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the squares of the following numbers using the observation method:","option":["204"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["18"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers using prime factorisation:","option":["324"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["26 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers using prime factorisation:","option":["676"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Squares And Square Roots","type":"Fill in the blanks","answer":["42"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the square roots of the following numbers using prime factorisation:","option":["1764"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["2,744 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the cubes of the following numbers:","option":["14"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["32,768"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the cubes of the following numbers:","option":["32"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["1,75,616"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the cubes of the following numbers:","option":["56"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["3,00,763 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the cubes of the following numbers:","option":["67"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["7,04969 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the cubes of the following numbers:","option":["89"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["11,24,864 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the cubes of the following numbers:","option":["104"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["512, 4096, 5832, 17576"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Which of the following are the cubes of even numbers?","option":["512, 1331, 729, 4096, 15625, 29791, 5832, 17576"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["(a) 343, 91125, 166375, 2197"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Which of the following are the cubes of odd numbers?","option":["343, 10648, 91125, 64, 74088, 166375, 2197, 8000"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["17167954342.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Observe the following pattern:","option":[""],"image":"17167954341.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["(b), (e)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Which of the following are perfect cubes?","option":["(a) 11109 (b) 3375 (c) 3840 (d) 1027 (e) 85184"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["(a) 2 (b) 7 (c) 25 (d) 15 (e) 9"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the smallest number by which each of the following numbers must be multiplied so that the product is a perfect cube.","option":["(a) 32 (b) 1323 (c) 2560 (d) 14400 (e) 27783"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["(a) 2,74,625 (b) 1,17,649 (c) 3,73,248 (d) 6,36,056 (e) 9,12,673 (f) 3,28,509"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the cubes of the following using the column method:","option":["(a) 65 (b) 49 (c) 72 (d) 86 (e) 97 (f) 69"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["(a) 1 (b) 9 (c) 5 (d) 4 (e) 9 (f) 6"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the units digit of the cube of each of the following numbers:","option":[""],"image":"17167956321.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["(a) 1,000 (b) 17,576"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Evaluate the following:","option":[""],"image":"17167956731.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["125, 512, 1331, 2744, 4913, 8000, 12167"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Write the cubes of 7 natural numbers which are of the form 3n + 2 (i.e., 5, 8, 11, 14, ......) and verify that-\"The cube of a natural number of the form 3n + 2 when divided by 3 leaves remainder 2.\""],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["11.91.125 cm\u00c2\u00b3 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the volume of a cube, each of whose edge measures 4.5 cm."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["216m ^ 3"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the volume of a cube whose surface area is 216m ^ 2 Is the numerical value of the surface area same as that of its volume?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["(a) 9 (b) 6 (c) 8 (d) 4 (e) 7"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the cube roots of the following numbers by the method of successive subtraction:","option":["(a) 729 (b) 216 (c) 512 (d) 64 (e) 343"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["(a) Yes (b) No (c) No (d) Yes (e) Yes"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Using successive subtraction, find if the following numbers are perfect cubes:","option":["(a) 27 (b) 105 (c) 212 (d) 1000 (e) 1331"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["3"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the smallest numbers that must be added to the following numbers to make them perfect cubes :","option":["213"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the smallest numbers that must be added to the following numbers to make them perfect cubes :","option":["510"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["8"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the smallest numbers that must be added to the following numbers to make them perfect cubes :","option":["1720"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["20"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the smallest numbers that must be added to the following numbers to make them perfect cubes :","option":["15605"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the smallest numbers that must be subtracted from the following numbers to make them perfect cubes:","option":["345"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["3"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the smallest numbers that must be subtracted from the following numbers to make them perfect cubes:","option":["4099"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["5"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the smallest numbers that must be subtracted from the following numbers to make them perfect cubes:","option":["3380"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["7"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the smallest numbers that must be subtracted from the following numbers to make them perfect cubes:","option":["4920"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["(a) 18 (b) 45 (c)-28 (d) 24 (e) 42 (f)-35 (g) 13 (h)-63"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the cube roots of the following numbers by the prime factorisation:","option":[""],"image":"17167961121.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["(a)- 8\/5 (b 195 (c) 19\/16 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the value of:","option":[""],"image":"17167961661.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["(a) 5 (b) 5 (c) 45 (d) 121"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the smallest numbers by which the following numbers must be divided to make them perfect cubes:","option":["(a) 29160 (b) 8640 (c) 77760 (d) 88209"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["17167963172.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the cube roots of the following using the units digit method:","option":[""],"image":"17167963171.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["62 cm"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The volume of a cubical box is 238328c * m ^ 3 Find the length of its side."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["6, 12, 18"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The sum of the cubes of three numbers which are in the ratio 1:2:3 is 7776. Find the numbers."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["2.466"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Making use of the cube root table, find the cube roots of the following (correct upto three decimal places):","option":["15"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["6.542"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Making use of the cube root table, find the cube roots of the following (correct upto three decimal places):","option":["280"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["12.319"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Making use of the cube root table, find the cube roots of the following (correct upto three decimal places):","option":["365"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["13.109"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Making use of the cube root table, find the cube roots of the following (correct upto three decimal places):","option":["492"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["17.213"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Making use of the cube root table, find the cube roots of the following (correct upto three decimal places):","option":["5100"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["17167968322.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Making use of the cube root table, find the cube roots of the following (correct upto three decimal places):","option":[""],"image":"17167968321.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["(a) 60.04 (b) 35.09 (c) 148.59 (d) 101.80"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Evaluate:","option":[""],"image":"17167968731.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["20"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Estimate the square root of the following numbers:","option":["375"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["27.5"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Estimate the square root of the following numbers:","option":["755"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["30.3"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Estimate the square root of the following numbers:","option":["920"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["55"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Estimate the square root of the following numbers:","option":["2925"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["3.3"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Estimate the cube root of the following numbers:","option":["35"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["7.4"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Estimate the cube root of the following numbers:","option":["400"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["55"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Estimate the cube root of the following numbers:","option":["166375"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Cubes And Cube Roots","type":"Fill in the blanks","answer":["97"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Estimate the cube root of the following numbers:","option":["912673"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["(a), (c), (e)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Which of the following numbers are divisible by 2?","option":[""],"image":"17168036891.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["(a), (b), (c), (d)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Which of the following numbers are divisible by 3 and 9 both?","option":[""],"image":"17168037641.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["(b), (c), (d),"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Which of the following numbers are divisible by 10?","option":[""],"image":"17168039431.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["5"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the ones digit of P if:","option":["P \/ 10 leaves remainder 5."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["0"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the ones digit of P if:","option":["P \/ 10 leaves no remainder."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["2 or 7"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the ones digit of P if:","option":["P \/ 5 leaves remainder 2."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["3 or 8"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the ones digit of P if:","option":["P \/ 5 leaves remainder 3."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["0, 3, 6, 9"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["If 31x 5 is a multiple of (a) 3 (b) 9, where x is a digit, what might be the values of x?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["0, 9 6. 22, 22, yes"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Choose three different digits from digits 1-9. Form all the 2-digit numbers using these three digits and find their sum. Dividing the sum of the numbers so formed by the sum of the chosen digits, what would you get? Repeat the same process by taking another set of digits. Have you got the same answer again?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["17167972392.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the following numbers in generlaised (expanded) form:","option":[""],"image":"17167972391.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["73"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The sum of the digits of a 2-digit number is 10. If 36 is subtracted from the number, the digits interchange their places. Find the number."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["25"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Think of a number, add 5, then multiply by 6. The answer is 180. What is the number?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["x = 230 y = 130"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find x and y, where x and y are positive numbers, the difference between x and y is 100 and sum of x and y is 360."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["17167974052.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the values of the letters in each of the following and justify your steps:","option":[""],"image":"17167974051.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["17167974552.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Complete the following table by finding a, b, c and d:","option":[""],"image":"17167974551.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["17167974952.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Complete the following table by finding a, b, c and d:","option":["Make a 4 x 4 magic square with 16 consecutive numbers starting from 20. What is its magic sum?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["A-1, B- C = 8D =5.E=6.F=5.G=6"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Complete the following multiplication table:","option":[""],"image":"17167975961.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Playing With Numbers","type":"Fill in the blanks","answer":["17167977102.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17167977101.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168058332.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"For the following algebraic expressions, identify the terms and their coefficients :","option":[""],"image":"17168058331.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168059712.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the value of the polynomial 8x - 3x ^ 2 +2at:","option":["(a) x = 0 (b) x = 1 (c) x = - 4 (d) x = 3"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["binomial"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Classify the following polynomials as monomials, binomials and trinomials:","option":["x + y"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["binomial"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Classify the following polynomials as monomials, binomials and trinomials:","option":["3a - 4b"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["(c) trinomial (d) trinomial (e) monomial (f) trinomial (g) binomial (h) monomial"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Classify the following polynomials as monomials, binomials and trinomials:","option":[""],"image":"17168062121.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["(a) 3 (b) 4 (c) 5 (d) 4"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the degree of the following polynomials:","option":[""],"image":"17168063091.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["(a) xy, 4xy (b) 5x\u00c2\u00b2y, 2yx\u00c2\u00b2 (c) 6m\u00c2\u00b2n,3m\u00c2\u00b2n (d) 8x, 9x"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write two like terms for each of the following:","option":[""],"image":"17168064071.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["(a) 3xy\u00c2\u00b2, 2xy (b) 5x\u00c2\u00b3y, 3xy\u00c2\u00b2 (c) 4ab, - 2a\u00c2\u00b2b\u00c2\u00b2 (d) 3ab\u00c2\u00b2, 4b"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write two unlike terms for each of the following:","option":[""],"image":"17168065411.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["12m\u00c2\u00b2 +2n2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Add the following expressions:","option":["212-2m\u00c2\u00b2 + n\u00c2\u00b2, m\u00c2\u00b2 -n\u00c2\u00b2 and 2n\u00c2\u00b2-12"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["x + 4xy + yz + zx"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Add the following expressions:","option":["3xy+4xy, yz + yz and z - 2x + zx"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["2ab + bc - 2ca"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Add the following expressions:","option":["abbc, bcca and ab + bc-ca"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["8xy + 2y ^ 2 +z"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Add the following expressions:","option":["8xy - 2y ^ 2 + 3zx, 2xy + 4y ^ 2 + zxand - 2xy - 3zx"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["3xy+12y^ 2 +6x - 6y + 2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Subtract the following:","option":["6x23y\u00c2\u00b2+4y-2 from 6x ^ 2 - 3xy + 9y ^ 2 + 6x - 2y"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["5x ^ z - 2x - y - 6xy + 10"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Subtract the following:","option":["8x2y+4xy-6 from 5x2 + 6x-3y-2xy +4"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["3ab - abc + 10ca - 3a"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Subtract the following:","option":["5ab2abc4ca from 8ab3abc +6ca3a"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["2xyyz 4zx + 8xyz"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Subtract the following:","option":["4xy2yz+ 8zx from 6xy3yz + 4zx + 8xyz"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["x\u00c2\u00b3-3x\u00c2\u00b2 +1"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["What must be added to x ^ 2 + 6x - 4 to get x ^ 3 - 2x ^ 2 + 6x -3?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["x\u00c2\u00b2 -2x ^ 3 - 2x ^ 2 - 5x +10"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["What must be subtracted from x ^ 4 + 3x ^ 2 - 4x + 6 to get 2x ^ 3 + 5x ^ 2 + x -4?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["6a3b4c"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Subtract the sum - 7b + a + c - 2a + 2c + 4b from the sum of 6a2b+2c and 5c4ba."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["4m-18n + 4"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The two adjacent sides of a rectangular plot - 6n + 2o + 8 and m-3n-20-6. Find the perimeter of the plot."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168069842.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Multiply the following pairs of monomials:","option":[""],"image":"17168069841.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168070662.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the following products:","option":[""],"image":"17168070661.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168071832.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Simplify the following:","option":[""],"image":"17168071831.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["(a)65  (b)-2304"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the following products and also find its value for a = 1, b = - 2 :","option":[""],"image":"17168072681.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168074292.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Simplify the following:","option":[""],"image":"17168074291.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168075372.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the product of (x ^ 3 + 2x ^ 2 - 5xy + y) and (x ^ 2 + 8xy + 1) and verify the result by taking x = - 1 and y = 3"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168075892.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168075891.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168076462.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Subtract 2(a ^ 4 - 3a ^ 2) from 2a ^ 2 * (a ^ 3 - a) - 3a(a ^ 4 + 2a)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168078532.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the following products and also find its value for x = 1, y = - 1, z = - 2 :","option":[""],"image":"17168078531.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168079192.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["From the product of (2m + 3n) and (4m - n) subtract the product of(4m + n) and (m + 2n)."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168085352.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Divide the following:","option":[""],"image":"17168085351.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168747642.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Divide the following:","option":[""],"image":"17168747641.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168748482.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Divide the following:","option":[""],"image":"17168748481.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168749552.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Divide and check the result:","option":[""],"image":"17168749551.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["-3x-5"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["What should be subtracted from 4x ^ 4 - 2x ^ 3 - 6x ^ 2 + x - 5 so that the result is exactly divisible by 2x ^ 2 + x -2?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["p=30, q3"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the values of p and q so that the polynomial 10x ^ 4 + 17x ^ 3 - 62x ^ 2 + px - q is exactly divisible by * 2x ^ 2 + 7x - 1"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168752002.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Expand each of the following by using a suitable identity:","option":[""],"image":"17168752001.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["17168753642.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the following products using an identity:","option":[""],"image":"17168753641.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["(a) 9604 (b) 11236 (c) 43264 (d) 1008016 (e) 29290 (f) 9984 (g) 39996 (h) 8096"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Using a suitable identity, evaluate the following:","option":[""],"image":"17168755451.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["(a) 97 (b) 1 (c) 100 (d) 0.2067 (approx)."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Using a suitable identity, evaluate the following:","option":[""],"image":"17168756011.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["131"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["If (x - y) = 11 and xy = 5 find the value of x ^ 2 + y ^ 2"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["5"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["1f * a ^ 2 + 4b ^ 2 = 17 and ab = 2 find a + 2b"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["(a) 3 (b) 7"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168756991.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["33."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["If * 3x + 4v = 9 and xy = 2 find the value of 9x ^ 2 + 16y ^ 2"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["(a) 110 (b) 17"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168757661.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Algebraic Expressions And Identities","type":"Fill in the blanks","answer":["51"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168758081.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["17168760072.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the HCF of the following monomials:","option":[""],"image":"17168760071.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["17168760862.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":[""],"image":"17168760861.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["5x (1 - 3x ^ 2)(4x - 7y)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":["5x(4x - 7y) -15x^ 3 (4x-7y)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["3 (a-2b) (a-2b-1)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":[""],"image":"17168761641.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["(m-5) (y-x)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":["x(5 - m) + y(m - 5)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["(m-5) (y-x)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":[""],"image":"17168762501.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["(x+y) {p +2q * (x + y) ^ 2 +r"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":["(2x + 3y)(6x - 7y) - (2x + 3y)(7y - 6x)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["2 (2x+3y) (6x7y)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":["(5x - 6y) ^ 2 - 15x + 18y"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["4x (6x-4y)(1-3x)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":["14x(6x - 4y) - 12x ^ 2 * (6x - 4y) + 10x(4y - 6x)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["17168764632.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":[""],"image":"17168764631.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["(x - m)(y + n)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":["xy - mn + nx - my"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["2(z + 2) (4xy +1)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":["8xyz + 16xy + 2z + 4"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["(p-2y) (px)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":[""],"image":"17168765751.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["(3b+5) (5a+3)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":["15ab + 15 + 9b + 25a"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["(x-2y) (pq)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":["px - 2py - qx + 2qy"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["(a + b) (r + t)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":["ar + br + at + bt"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["17168767332.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":[""],"image":"17168767331.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["65"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Evaluate using a ^ 2 - b ^ 2 = (a + b)(a - b) where:","option":["a=9. b = 4"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["28"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Evaluate using a ^ 2 - b ^ 2 = (a + b)(a - b) where:","option":["a=6.4. b = 3.6"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["480"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Evaluate using a ^ 2 - b ^ 2 = (a + b)(a - b) where:","option":["a = 62b = 58"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["17168768852.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following:","option":[""],"image":"17168768851.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Factorisation Of Algebraic Expressions","type":"Fill in the blanks","answer":["17168770572.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Factorise the following algebraic expressions by splitting the middle term:","option":[""],"image":"17168770571.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["17168771712.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Solve the following linear equations and check the result:","option":[""],"image":"17168771711.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["17168772812.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Solve the following linear equations and check the result:","option":[""],"image":"17168772811.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["17168774302.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Solve the following linear equations:","option":[""],"image":"17168774301.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["20, 21, 22"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Write three consecutive integers whose sum is 63 ?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["45, 120"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Two numbers are in the ratio 3: 8. If sum of the two numbers is 165, find the numbers."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["7, 8, 9"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Three consecutive integers are such that when they are taken in increasing order and multiplied by 2, 3 and 4 respectively, they add up to 74. Find these numbers."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["25, 65"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The sum of two numbers is 90 and the greater number exceeds twice the smaller by 15. Find the numbers."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["9 metres"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The perimeter of a rectangle is 30 metres. If its length exceeds its breadth by 3 metres, then find its length."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["Akansha: 32 yrs, Tripti: 40 yrs"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The present ages of Akansha and Tripti are in the ratio 4: 5. Eight years from now, their ages will be in the ratio 5: 6. Find their present ages."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["15\/22 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The denominator of a rational number is greater than its numerator by 7. If the numerator is increased by 17 and the denominator is decreased by 6, the new number becomes 2. Find the original number."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["63 or 36"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["One of the two digits of a two-digit number is two times the other digit. If we interchange the digits of this two-digit number and add the resulting number to the original number, we get 99. What is the original number?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["Mukul:10 yrs, His father: 30 yrs"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Five years ago, Mukul&#039;s father was five times Mukul&#039;s age. At present, the sum of Mukul and his father&#039;s age is 40 years. What are the present ages of Mukul and his father?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Linear Equations","type":"Fill in the blanks","answer":["60, 50, 40"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Divide 150 into three parts such that the second number is five-sixths of the first and third number is four-fifths of the second."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["20%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the following into percentages:","option":["1\/5"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["75%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the following into percentages:","option":["3\/4"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["550%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the following into percentages:","option":["5.5"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["90%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the following into percentages:","option":["0.9"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["66.67%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the following into percentages:","option":["2:3"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["0.45"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the following percentages into fractions, ratios or decimals as indicated:","option":["45% into decimal"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["1.2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the following percentages into fractions, ratios or decimals as indicated:","option":["120% into decimal"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["13\/600"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the following percentages into fractions, ratios or decimals as indicated:","option":["(2 1\/6)% into fraction"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["27:20"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the following percentages into fractions, ratios or decimals as indicated:","option":["135% into ratio"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["3\/2 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the following percentages into fractions, ratios or decimals as indicated:","option":["150% into fraction"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["1 \/ 40 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Convert the following percentages into fractions, ratios or decimals as indicated:","option":["0.25% into ratio"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["30"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find:","option":["10% of 300"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["225 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find:","option":["15% of 1500"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["20%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["What per cent is 10 of 50?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["120 runs"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Tarun is batting in a cricket match. He has already scored 75% of the target runs. He needs to score 40 more runs to win. How many run has he already scored?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["32,000"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["35% of the population of a town are men and 40% are women. If the number of children is 20,000, find the number of women."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["17168780632.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The salary of a clerk is increased by 30%. By what per cent must be increased salary be decreased in order to restore it to the former amount?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["6.5%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Mr. Rahul Kumar earns 14,950 per month. He is given a salary increment of 971.75. What is the percentage increase in Mr. Kumar&#039;s salary?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["9.3.5% (increase)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Kapil&#039;s salary is increased by 15% and then decreased by 10%. Find the percentage change in his salary."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["4% "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["In a town, water tax is increased by 20% and the consumption of water is decreased by 20%. What is the net effect on revenue from water tax?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["500 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Ritu requires 33% to pass. If she gets 155 marks and falls short by 10 marks, what are the maximum marks?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["200 g"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["An alloy consists of 30% zinc, 45% nickel and the rest copper. Find the weight of copper in 800g of the alloy."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["profit, 6.29%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Tanisha bought a computer for 25,650. Due to some defect in it, she had to pay 1,350 for repair. Then she sold it for 28,700. Find her gain or loss per cent."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["loss, 37.5% "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["If the cost price of 10 chairs is equal to the selling price of 16 chairs, find the profit or loss per cent."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["200, 28.75%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A merchant bought 10 kg of rice at 70 per kg. He sold 5 kg at 100 per kg and the remaining at 80 per kg. Find his profit and the profit per cent."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["(a) 3,750 (b) 3,375 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Nitish purchased a T.V. set for 2,700 and spent 300 on its repairing. He then sold it to Ankur at a gain of 25%. Ankur sold it to Pramod at a loss of 10%. Find the C.P. for:(a) Ankur (b) Pramod"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["loss, 1% "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Tarun sells two radio sets for 2,288 each. On one he gains 10% and on the other he loses 10%. Find his gain or loss per cent."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["23.66 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A person suffers a loss of 12.5% by selling an article for 17.50. At what price must he sell the article to make a profit of 20%?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["7.15%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Ankush purchased 120 mangoes at the rate of 2 per mango. He sold 60% of the mangoes at the rate of 2.50 per mango and the remaining mangoes at the rate of 2 per mango. Find his profit per cent."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["\u00e2\u201a\u00b9800"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["If a manufacturer gains 10%, the wholesaler 15%, and the retailer 25%, then what is the cost production of an electric toaster whose retail price is 1,265?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["\u00e2\u201a\u00b93,\u00e2\u201a\u00b9 17"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Marked price of a pen is 20. It is sold at a discount of 15%. Find the discount allowed on the pen and its selling price."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["(a) \u00e2\u201a\u00b9 595 (b) (16 2\/3)%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["(a) Find S.P., if M.P. = 700 and discount = 15%. (b) Find discount %, if M.P. 1,200 and S.P. = \u00e2\u201a\u00b9 1,000."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["800"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A jacket was sold for 680 after allowing a discount of 15% on the marked price. Find the marked price of the jacket."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["\u00e2\u201a\u00b91,600 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["What price should Abdul mark on a pair of shoes which costs him 1,200 so as to gain 12% after allowing a discount of 16%?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["5,000 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Nitisha bought an air cooler for 5,500 including a tax of 10%. Find the price of the air cooler before VAT was added."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["3,847.50 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A shopkeeper offers two successive discounts of 10% and 5% on a saree whose marked price is 4,500. Find its selling price."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["180"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A shopkeeper allows 10% discount and still gains 10%. What is the cost price of a book which is marked at 220?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Percentage And Its Applications","type":"Fill in the blanks","answer":["11.11%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Tanu wants to buy a dress which is marked at a price of 4,050. VAT is applicable at 12.5%. However, Tanu does not want to pay more than 4,050. She requests the shopkeeper to offer her a discount so that she does not have to pay more than 4,050. Find the selling price that the shopkeeper will sell the dress at. Also find the discount % that the shopkeeper gives."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["\u00e2\u201a\u00b9900"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the simple interest on 6,000 at 5% per annum for 3 years."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["12% p.a."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Mayank borrowed 8,450 from Nitin. At the end of 4 years Mayank had to pay back 12,506. What was the rate of interest?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["\u00e2\u201a\u00b95,796 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Rajeev received a sum of 40,000 as a loan from a finance company at the rate of 7% per annum.Find the compound interest paid by Rajeev after 2 years."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["\u00e2\u201a\u00b91,157.63 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A man deposits 1,000 in a savings bank account. How much will it amount in three years if the rate of interest is 5% per annum and the interest is payable annually?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["\u00e2\u201a\u00b91,576.25"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the compound interest on 10,000 for 1 years at 10% per annum, interest being payable 2 half-yearly."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["\u00e2\u201a\u00b9412.16"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the compound interest on \u00e2\u201a\u00b9 5,000 at the rate of 8% per annum for 1 year when the interest is compounded quarterly."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["A = 14,292.20; C.I.=$ 2.292 * 0.2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the amount and the compound interest. On 12,000 for 3 years at 6% per annum."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["\u00e2\u201a\u00b92,522"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the compound interest at 5% per annum for 3 years on the principal, which gives simple interest of 2,400 at the same rate and for the same time."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["\u00e2\u201a\u00b93,310"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The simple interest on a certain sum of money at the rate of 4% per annum for 3 years is 1,200. Find the compound interest on the same amount at the rate of 10% per annum for 3 years."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["17168796862.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A sum of 25,000 invested at 8% compounded semi-annually amounts to 28,121.60. Compute the time period."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["A = 22.218 C.I. = 6,218"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168797951.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["A6,748.56; C.I\u00e2\u201a\u00b9748.56"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the amount and compound interest on 6,000 in 3 years if the rate of interest is 5% for the first year, 4% for the second year and 3% for the third year."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["5% p.a."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["At what rate per cent per annum will a sum of 4,000 yield a compound interest of 410 in 2 years?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["70,560"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The population of a village is 64,000. What will be the population after 2 years, if it is increasing at the rate of 5% annually?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["2,65,302 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The population of a city is 2,50,000. If the annual birth rate is 6.5% and the annual death rate is 4.5%, what will be the population of the city after 3 years?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["59,319; 4,618 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Present value of a LCD T.V. is 64,000. If it depreciates at the rate of 2.5 paise per rupee per annum, find the value of the T.V. after 3 years. By how much has the value of the T.V. gone down?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["(12 1\/2)%"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["In a factory, the production of televisions rose from 6,400 units to 8,100 units in 2 years. Find the rate of growth per annum."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["5,865"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["To complete a project in years, 7,500 workers were employed. At the end of the first year 15% workers were retrenched. At the end of the second year 20% of those working at that time were retrenched. In order to complete the project on time, the number of workers was increased by 15% at the end of the third year. How many workers were working during the fourth year?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Simple Interest And Compound Interest","type":"Fill in the blanks","answer":["\u00e2\u201a\u00b91,56,750"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Puneet started a business with an investment of 1,50,000. The first year he incurred a loss of 5% per annum and the second year a profit at 10% per annum. Find his net worth at the end of two years."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["141 minutes "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["I can type 1920 words in 90 minutes. Find the time required to type 3008 words."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["10 km"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A car is travelling 50 km in one hour. How much distance would it travel in 12 minutes?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["900 g"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The amount of extension in an elastic string varies directly with the weight hung to it. If a weight of 150 g produces an extension of 2.9 cm, what would produce an extension of 17.4 cm?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["(a), (c), (e)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Which of the following are in inverse variation with each other?","option":["(a) Population of a country and area of land per person (b) Area of cultivated land and crop harvested (c) Time taken to cover a given distance with variation in speed of a vehicle (d) The number of chocolates (x) you can buy with 50 and the cost (y) of each chocolate (e) Number of people and time taken to complete a work"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["(a), (b)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"In which of the given tables, x and y are in inverse variation with each other?","option":[""],"image":"17168828131.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["17168828642.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the missing entries if x and y vary inversely:","option":[""],"image":"17168828641.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["8 goats"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["If 40 goats can graze a field in 10 days, how many goats will graze the same field in 25 days?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["8 days"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["20 men build a wall in 10 days. In how many days will 25 men build the same wall?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["1 1\/2 hrs"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A car takes 2 hours to reach a destination by travelling at the speed of 60 km\/h. How long will it take when the car travels at the speed of 80 km\/h?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["40 minutes "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A box of chocolates was distributed among 8 children and each child got 5 chocolates. If this box of chocolates is distributed among 10 children, how many chocolates will each child get?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["40 minutes "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A school has 8 periods a day each of 50 minutes duration. How long would each period be, if the school has 10 periods a day, assuming the working hours of the school is same?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["36 minutes "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["8 taps having the same rate of flow, fill a tank in 27 minutes. If two taps go out of order, how long will the remaining taps take to fill the tank?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["160"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A contractor undertook a contract to complete a part of a stadium in 9 months with a workforce of 560 men. Later on, it was required to complete the job in 7 months. How many extra men would he employ?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["16 seconds"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A train of length 320 metres is running at a speed of 72 km\/h. How much time will it take to cross a pole?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["30 seconds"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Two trains 350 m and 250 m long are going at 42 km\/h and 30 km\/h respectively in opposite direction. How long would it take them to pass each other?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["1 day 8 hours"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Tarun completes a piece of work in 2 days and Rahul completes the same work in 4 days. If they both work together, in how many days will they complete the work?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["12 * 3\/5 * day"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Mohit, Honey and Ravi can reap a field in 63\/4 days; Honey, Ravi and Kapil in 14 days; Ravi, Kapil and Praveen in 18 days; Kapil, Praveen and Naman in 21 days. In how much time can all of them together reap the field?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["15 days"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A and B together can do a piece of work in 10 days. A alone can finish the work in 30 days. In how many days will B alone finish the work?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["13 3\/4 days "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Rohan can do a piece of work in 25 days and his friend Akram can do same work in 20 days. They started the work together, after 5 days Akram leaves the work. In how many days will Rohan complete the remaining work?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["1 1\/3 days"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A, B and C can do a piece of a work in 3 days, 4 days and 6 days respectively. How long will they take to complete it, if they work together?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["16 days"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A and B can do a piece of work in 18 days, B and C can do it in 24 days, while C and A can finish it in 36 days. In how many days can A, B, C finish it, if they all work together?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["(a), (b), (e)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Which of the following show direct variation?","option":["(a) Height of a person and the number of years (b) Income tax and the income (c) Number of people and quantity work (d) Number of rainy days and the amount of rainfall on those days (e) Height of a child and his weight as he grows"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["(a), (c)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"In which of the following is x in direct variation with y?","option":[""],"image":"17168824491.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["17168824952.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Complete the following tables assuming that x is in direct variation with y:","option":[""],"image":"17168824951.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["17168825242.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Complete the following tables assuming that x is in direct variation with y:","option":[""],"image":"17168825241.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["60"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168826031.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["65"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The cost of 9 oranges is 40.50. How many oranges can be bought for 292.50?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["22.5kg"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["If the weight of 5 boxes is 12.5 kg, find the weight of 9 such boxes."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Direct And Inverse Variations","type":"Fill in the blanks","answer":["1,937.50 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["If 5 men or 8 women earn 625 per day, how much would 8 men and 12 women earn per day?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["Triangle"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the names of the polygons having:","option":["3 sides"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["Hexagon "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the names of the polygons having:","option":["6 sides"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["Septagon "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the names of the polygons having:","option":["7 sides"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["Nonagon "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the names of the polygons having:","option":["9 sides"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["9"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"How many diagonals do each of the following have?","option":["A hexagon"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["5"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"How many diagonals do each of the following have?","option":["A regular pentagon"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"How many diagonals do each of the following have?","option":["A convex quadrilateral"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["0"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"How many diagonals do each of the following have?","option":["A triangle"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["(a), (b), (d)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Which of the following figures are polygons?","option":[""],"image":"17168834131.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["and"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Draw a rough diagram to show:"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["Do it yourself"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Draw two examples of each of the following:","option":["(a) Curves that are closed but not simple. (b) Curves that are both closed and simple. (c) Curves that are neither simple nor closed."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["(a) 65 deg * (b) 120 deg c) 140 deg (d) 40 deg"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the value of x in each figure:","option":[""],"image":"17168836451.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["72.5\u00c2\u00b0 each "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Two angles of a quadrilateral are 75 deg and 140 deg The other two angles are equal. Find the other two angles."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["57 deg, 95 deg 133\u00c2\u00b0, 75 deg"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Three angles of a quadrilateral are in the ratio 3:5:7. The difference of the least and the greatest of these angles is 76 deg Find all the four angles of the quadrilateral."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["70 deg 50 deg "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["PQRS is a quadrilateral in which PS ||QR. If angle P = 110 deg and angle S = 130 deg what are the measures of the other two angles?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["115 deg "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The three angles of a quadrilateral are 95 deg 105 deg and 45 deg Find its fourth angle."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["angle R= angle S = 60 deg , angle P= angle Q =120\u00c2\u00b0"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["PQRS is a quadrilateral with angle P = angle Q and angle R = angle S. If angle P =2 angle R find the measure of each angle."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["36\u00c2\u00b0, 72\u00c2\u00b0, 108 deg 144 deg"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Four angles of a quadrilateral are in the ratio 1:2:3:4. Find the angles."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["12 deg"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["If three angles of a quadrilateral are 90 deg 60 deg and 90 deg find the fourth angle of the quadrilateral."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["(a) rangle x = 105 deg , v = 75 deg z = 75 deg * (b) * x = 130 deg y = 50 deg z = 50 deg (c) x = 110 ^ o v = 40 deg z = 30 deg"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find angles x, y, z in each of the following parallelograms:","option":[""],"image":"17168838861.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["108 deg 72\u00c2\u00b0, 108\u00c2\u00b0, 72\u00c2\u00b0"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The measures of two adjacent angles of a parallelogram are in the ratio 3:2. Find the measure of each of the angles of parallelogram."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["25.2 cm"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The longer side of a parallelogram is 8.4 cm and the shorter side is half of the longer side. Find the perimeter of the parallelogram."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["45\u00c2\u00b0, 60\u00c2\u00b0"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168840541.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["45\u00c2\u00b0, 60\u00c2\u00b0"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168841141.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["Do it yourself"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168884361.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["x = 3"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168884721.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["72\u00c2\u00b0, 108 deg 72\u00c2\u00b0, 108 deg"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The adjacent angles of a parallelogram are (3x - 12) deg and (52 + 2x) deg Find the angles of the parallelogram."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["angle E= angle N = 130 deg "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168886871.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Prove that each diagonal of a rhombus bisects the angle through which it passes."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["8sqrt(2) cm"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["In a square, one diagonal is 16 cm. Find the side of the square."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["angle P =angle R = 60 deg , angle Q= angle S = 120 deg "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["PQ is a rhombus in which the altitude from S to side PQ bisects side PQ. Find the angles of the rhombus."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["AC=12cm"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["ABCD is a rhombus whose diagonals intersect at O. If AB = 10 cm and BD = 16 cm, find the length of diagonal AC."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["60, 120\u00c2\u00b0, 60\u00c2\u00b0, 120\u00c2\u00b0"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Two adjacent angles of a rhombus are in the ratio 3: 6. Find the measure of all the angles."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["m = 9 . n =5"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168894811.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Understanding Quadrilaterals","type":"Fill in the blanks","answer":["120\u00c2\u00b0, 130 deg"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["In a trapezium, two adjacent angles are 50 deg and 60 deg Find the remaining two angles."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["100c * m ^ 2 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the area of parallelogram whose base is 20 cm and the corresponding height is 5 cm."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["61.6 cm\u00c2\u00b2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the area of the following rectangles, given their lengths and breadths are:","option":["11 cm, 5.6 cm"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["16.3625 cm\u00c2\u00b2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the area of the following rectangles, given their lengths and breadths are:","option":["3.85 cm, 4.25 cm"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["360c * m ^ 2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the area of the following rectangles, given their lengths and breadths are:","option":["18 cm, 20 cm"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["25 cm\u00c2\u00b2 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the area of following squares, given their sides are:","option":["5 cm"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["21.3444 cm\u00c2\u00b2 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the area of following squares, given their sides are:","option":["4.62 cm"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["2601 cm\u00c2\u00b2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the area of following squares, given their sides are:","option":["51 cm"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["840 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The length and breadth of a rectangular field are in the ratio 4: 3. Its area is 6, 912m ^ 2 Find the cost of fencing the field at 2.50 per metre."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["210 cm"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The sides of a triangle are 12 cm, 35 cm and 37 cm. Find its area."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["49 cm "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the altitude of a triangle whose area is 784c * m ^ 2 * i base is 32 cm."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["14.25 cm\u00c2\u00b2 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168900781.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["12,500"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168901051.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["140 cm\u00c2\u00b2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168901261.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["8sqrt(2) cm or 11.31 cm"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The side of a square is 8 cm. Find the length of its diagonal."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["32 cm "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The area of a rhombus is 256c * m ^ 2 If one of the diagonals measures 16 cm, find the length of the other diagonal."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["56c * m ^ 2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the area of the rhombus if the length of each side be 7 cm and the corresponding altitude be 8 cm."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["10 cm "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The area of a trapezium is 400c * m ^ 2 If its height is 40 cm and the length of one of its base is 10 cm, find the length of its other base."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["60 cm\u00c2\u00b2 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the area of a rhombus whose perimeter is 60 cm and one diagonal is of length 18 cm."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["180m ^ 3"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The parallel sides of a trapezium are 12 m and 6 m respectively and the distance between them is 20 m. What is the area of the trapezium?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["36 m "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The area of a trapezium of height 10 m is 250 sq m. If one of the parallel sides is 14 m, what is the length of the other side?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["15m, 8m"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The area of a trapezium is 138m ^ 2 . The distance and the difference between the lengths of the parallel sides are 12 m and 7 m respectively. Find the lengths of the parallel sides."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["18 cm, 6 cm"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The ratio of the length of the parallel sides of a trapezium is 6: 2. The distance between them is 32 cm. If the area of the trapezium is 384c * m ^ 2 , find the lengths of the parallel sides."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["216 cm\u00c2\u00b2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the area of a trapezium whose parallel sides are 36 cm and 12 cm, and the non-parallel sides are 15 cm each."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["220.5 cm\u00c2\u00b2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The diagonal of a quadrilateral is 30 cm and the perpendiculars drawn to the diagonal from the opposite vertices are of lengths 9.2 cm and 5.5 cm. Find the area of the quadrilateral."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["30 m "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the length of a diagonal of a quadrilateral whose area is 180 m\u00c2\u00b2 and the lengths of the perpendiculars to the diagonal from opposite vertices are 8 m and 4 m respectively."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["119cm\u00c2\u00b2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168917621.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["(a) 1967.85 cm\u00c2\u00b2 (approx) (b) 219.77 cm\u00c2\u00b2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168919171.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["45cm\u00c2\u00b2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the area enclosed by the following polygon. (Use z * sqrt(3) = 1.73 )"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["(a) 822cm\u00c2\u00b2  (b) 46.8cm\u00c2\u00b2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the surface area of a cuboid whose:","option":["(a) length = 8 cm, breadth = 11 cm, height = 17 cm  (b) length 4.2 m, breadth = 3 m, height = 150 cm"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["105.84cm\u00c2\u00b2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the surface area of a cube of side 4.2 m."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["8,700 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A swimming pool is 20 m long, 15 m broad and 4 m deep. Find the cost of cementing its floor and the walls at the rate of 15 per square metre."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["4 times "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The dimensions of a cube are doubled. By how many times will its surface area increase?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["5 m"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A room has a length of 8 m and breadth of 6 m. If the cost of painting its four walls at the rate of 80 per m\u00c2\u00b2 is 11,200, find the height of the room."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["7cm\u00c2\u00b2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A cuboid has a total surface area of 149 m\u00c2\u00b2 and its lateral surface area is 135 m\u00c2\u00b2. Find the area of its base."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["384c * m ^ 2 1536 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A cubical cardboard box of side 8 cm is made. Find the area of the coloured paper required to cover the box. If the cost of the paper measuring 6cm * 4 cm is 96, find the cost of paper required to cover the box."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["94.2c * m ^ 2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the curved surface area of a right circular cylinder of base radius 3 cm and height 5 cm. (Take pi = 3.14 )"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["528"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The inner diameter of a circular well is 3.5 m and it is 12 m deep. Find the cost of plastering the inner surface at the rate of 4 per square metre."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["3:2 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The ratio of the curved surface area and total surface area of a right circular cylinder is 3: 5. Find the ratio of its height to its radius."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["99 m"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The diameter of a 120 m long roller is 84 cm. If it takes 1000 complete revolutions to level a playground having breadth of 32 m, find the length of the playground."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["3.168c * m ^ 2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["An iron pipe 20 cm long has external diameter equal to 25 cm. If the thickness of the pipe is 1 cm, find the whole surface of the pipe."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["(a) 1287c * m ^ 3 (b) 688c * m ^ 2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the volume of a cuboid whose dimensions are:","option":["(a) length 11 cm, width = 13 cm and height = 9 cm (b) length 8 cm, width = 4.3 cm and height = 20 cm"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["(a) 157.464c * m ^ 3 (b) 357.911 c * m ^ 3 (c) 64 m ^ 3 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the volume of a cube whose side is:","option":["(a) 5.4 cm (b) 7.1 cm (c) 4 m"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["2.156c * m ^ 3"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["Find the volume of the cylinder whose radius is 0.7 cm and height is 1.4 cm."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["12 kg "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A brick has dimension 10cm * 6cm * 5cm If * 1c * m ^ 3 of brick material weighs 5 g, find the weight of 8 bricks."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["(a) Volume will increase and become times the original. (b) Volume will decrease and become 1\/8 * th of the original."],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["What happens to the volume of a cube, if the length of its edge becomes-(a) double (b) half."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["640 soap cakes"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["How many soap cakes each of dimensions 7 cm * 5cm * 2.5 cm can be placed in a box of dimensions 56cm * 40cm * 25 cm?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["8,000 m ^ 3 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The dimensions of a cuboid are in the ratio 4:2:1 and the total surface area is 2, 800c * m ^ 2 Find its volume."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["84 beads "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A cuboidal block of silver is 9 cm long, 4 cm wide, and 3.5 cm high. If beads of volume 1.5c * m ^ 3 each are made from it, find the number of beads that can be made from the block."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["91.52 kg"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":[""],"image":"17168925371.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["5 cm, 7 cm "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The radius and height of a cylinder are in the ratio 5: 7, and its volume is 550c * m ^ 3 Find its radius and height."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["45,813.8 cm"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The curved surface area of a cylinder is 1, 800c * m ^ 2 and the circumference of its base is 120 cm. Find the volume of the cylinder."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["1.078c * m ^ 3 "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["The ratio between the curved surface area and the total surface area of a right circular cylinder is 1: 2. Find the volume of the cylinder, if its total surface area is 616 c * m ^ 2"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["866.25m ^ 3 1,485"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["How many cubic metres of earth must be dug out to sink a well of 22.5 m deep and diameter 7 m? Also, find the cost of plastering the inner curved surface at 3 per sq metre."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Mensuration","type":"Fill in the blanks","answer":["42,240 cm\u00c2\u00b3; 337.92 kg"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Fill in the blanks :","option":["A hollow cylindrical tube, open at both ends is made of 2 cm thick iron. If the external diameter is 50 cm and the length of the tube is 140 cm, find the volume of iron in it. Find the weight of the tube, if * 1c * m ^ 3 * of metal weighs 8 g."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"A survey was conducted in 25 families of a locality. Following are the number of children in these families. Prepare a frequency distribution table of the data.","option":["2, 2, 3, 1, 1, 1, 2, 3, 2, 2, 1, 1, 2, 2, 1, 1, 3, 2, 2, 1, 1, 2, 2, 2, 2"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["(a) Frequency: 3, 9, 11, 4, 5, 8, 12 (b) Frequency: 4, 12, 5, 7, 3, 2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Complete the following frequency distribution table:","option":[""],"image":"17168927441.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Following data represents the marks of a group of 40 students in examination. Represent the data by a frequency distribution table using the same class-size, one such class being 20-30 (30 not included):","option":["18, 27, 36, 18, 43, 31, 37, 41, 28, 35, 39, 29, 19, 24, 18, 27, 46, 36, 36, 21, 13, 26, 23, 32, 18, 30, 19, 31, 17, 34, 22, 19, 27, 42, 40, 37, 37, 25, 23, 27"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["(a) 200-225 1. (b) 2. (b) 300325 (c) 150 175, 225 250"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Study the following frequency distribution table of daily income of 550 workers of a factory and answer the following questions:","option":[""],"image":"17168928521.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["and "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Construct a frequency distribution table for the following weights (in g) of 35 oranges using the equal class-intervals, one of them is 50-55 (55 is not included).","option":["30, 40, 45, 32, 43, 50, 55, 70, 61, 62, 70, 53, 62, 37, 52, 42, 50, 35, 53, 55, 73, 74, 70, 65, 46, 45, 68, 60, 59, 58, 34, 74, 62, 35, 70 (a) What is the class-mark of the class-interval 40-45? (b) What is the range of the above weights? (c) How many classes are there?"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["Do it"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Construct a frequency distribution table of class-size 10 for the following data:","option":["35, 11, 22, 28, 7, 10, 15, 5, 21, 42, 29, 31, 16, 25, 24, 18, 10, 11, 12, 14, 3, 8, 6, 11, 23, 25, 45, 33, 16, 49, 22, 35, 9, 14, 15, 11, 19, 30, 27, 8"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The following table shows the favourite sports of 250 students of a school:","option":[""],"image":"17168929911.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The following table shows the favourite sports of 250 students of a school:","option":[""],"image":"17168930831.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["(a) The bar graph gives the information of the production of cars in five different years. (b) In 2009; 11,000 (c) In 2010; 4,000 (d) 7,000 (e) 6: 4 or 3:2"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Read the bar graph given alongside and answer the following questions:","option":[""],"image":"17168931611.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["(a) The bar graph gives the information about the marks obtained by a student in various subjects. (b) Mathematics (c) Science (d) 60 (e) 310"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Study the following bar graph and answer the questions given below:","option":[""],"image":"17168932321.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["Do it yourself"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Draw a bar graph representing the following data:","option":[""],"image":"17168932791.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The following data shows the percentage wins in ODI by top 8 cricket teams. Represent it in a double bar graph.","option":[""],"image":"17168933701.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The following data shows the temperatures in \u00c2\u00b0C and the humidity percentages on five days in a week. Represent it in a double bar graph.","option":[""],"image":"17168934071.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["(a) The graph gives the information about the marks obtained by a student in two consecutive years in various subjects. (b) Maths (c) Hindi (d) English (e) 15"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Study the following bar graph and answer the questions given below:","option":[""],"image":"17168934691.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["Do it yourself"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The following data shows the number of students offered different subjects in a school:","option":[""],"image":"17168935291.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["(a) Hockey-30,000; Tennis\u00e2\u201a\u00b915,000 : Football-18,000 Cricket\u00e2\u201a\u00b945,000 (b) \u00e2\u201a\u00b9 72,000"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The pie chart given alongside represents the amount spent by a sports club in a year on four different sports.","option":[""],"image":"17168946521.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The following data relates to the cost of construction of a house in New Delhi. Represent the data in a pie chart.","option":[""],"image":"17168947041.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":[""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The number of hours spent by a class VIIIth student on various activities are given below:","option":[""],"image":"17168947691.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Data Handling","type":"Fill in the blanks","answer":["(a) Hindi (b) 30 marks (c) Yes"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The adjoining pie chart gives the marks scored in an examination by a student in Hindi, English, Mathematics, Social Science and Science. If the total marks obtained by the students were 540, answer the following questions:","option":[""],"image":"17168948281.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["17168949702.png",""],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The weekly wages of 30 workers in a factory are:","option":["830, 835, 810, 836, 890, 835, 869, 845, 898, 890, 820, 868, 832, 833, 845, 812, 836, 855, 804, 840, 868, 885, 806, 890, 840, 835, 820, 869, 810, 835 Draw the grouped frequency distribution table and histogram. Take equal class-width and one of the class as 800-810."],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["Do it yourself"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Draw a histogram for the following table:","option":[""],"image":"17168950231.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["Do it yourself"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The daily minimum temperatures of 30 days in a city are recorded as below. Organize the data such that one of the class-intervals is 38-40. Represent the data as a histogram.","option":["34, 36, 38, 38, 36, 37, 35, 39, 37, 35, 36, 39, 36, 38, 42, 41, 41, 43, 38, 40, 41, 40, 35, 36, 38, 38, 37, 39, 42"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["(a) 10 (b) 20-30 (c) 14 (d) 40 -50"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The following histogram depicts the marks obtained by the students of class VIII in a Mathematics test:","option":[""],"image":"17168952531.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["(a) 20 (b) 60-80 (c) 0-20 (d) 18"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"The following histogram depicts the earnings of 70 chemists. Study it and answer the questions given ahead:","option":[""],"image":"17168953801.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["Ist quadrant"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Plot the following points on graph and locate the quadrants in which these points lie:","option":["A(7, 6)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["IInd quadrant"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Plot the following points on graph and locate the quadrants in which these points lie:","option":["B(- 3, 3)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["Ist quadrant"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Plot the following points on graph and locate the quadrants in which these points lie:","option":["C(2,2)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["IVth quadrant"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Plot the following points on graph and locate the quadrants in which these points lie:","option":["D(5, - 5)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["IIIrd quadrant"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Plot the following points on graph and locate the quadrants in which these points lie:","option":["E(- 5, - 5)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["IVth quadrant"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Plot the following points on graph and locate the quadrants in which these points lie:","option":["F(6, - 9)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["IVth quadrant"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Plot the following points on graph and locate the quadrants in which these points lie:","option":["G(1, - 4)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["IIIrd quadrant "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Plot the following points on graph and locate the quadrants in which these points lie:","option":["H(- 6, - 8)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["Do it yourself "],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Plot the following points on a graph:","option":["(a) P(- 6,0) (c) R(3, 0) (b) Q(0, - 6) (d) S(- 3, 0)"],"image":""}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["A = (5, - 3) B = (2, 1)C = (- 2, 1) D = (- 3, - 3) E = (- 5, 4) F = (9, 5) G=( 7 ,-7)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Find the coordinates of the points marked on the graph given ahead:","option":[""],"image":"17168959531.png"}},{"excel_id":"Penguin Maths","class":"Class 8","subject":"Penguin Maths","book":"Penguin Maths-8","chapter":"Introduction To Graphs","type":"Fill in the blanks","answer":["In rectangle PQRS: P = (- 9, 8) Q = (- 3, 8) R =(-3,4); S = (- 9, 4) , In, triangle ABC: A = (6, 4) B = (3, - 3) C = (9, 2) In triangle EFD: E = (- 8, - 4) F = (- 6, - 8) \/ 5 = (- 3, - 4)"],"difficulty":"E","outcome":"book","mark":"1","question":{"title":"Write the coordinates of the points shown in the given figures on the graph:","option":[""],"image":"17168959991.png"}},]