MCQ Questions for Class 7 Maths with Answers<\/a> during preparation and score maximum marks in the exam. Students can download the Exponents and Powers Class 7 MCQs Questions with Answers from here and test their problem-solving skills. Clear all the fundamentals and prepare thoroughly for the exam taking help from Class 7 Maths Chapter 13 Exponents and Powers Objective Questions.<\/p>\nExponents and Powers Class 7 MCQs Questions with Answers<\/h2>\n
Students are advised to solve Exponents and Powers Multiple Choice Questions of Class 7 Maths to know different concepts. Practicing the MCQ Questions on Exponents and Powers Class 7 with answers will boost your confidence thereby helping you score well in the exam.<\/p>\n
Explore numerous MCQ Questions of Exponents and Powers Class 7 with answers provided with detailed solutions by looking below.<\/p>\n
Question 1.
\nMultiplicative inverse of \\(\\frac { 1 }{ 7 }\\) is
\n(a) 14
\n(b) 7
\n(c) 49
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (b) 7<\/p>\n<\/details>\n
\nQuestion 2.
\nSimplify 2 \u00d7 103<\/sup>.
\n(a) 1000
\n(b) 2000
\n(c) 16000
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (b) 2000
\n2 \u00d7 10 \u00d7 10 \u00d7 10 = 2000.<\/p>\n<\/details>\n
\nQuestion 3.
\nFind 73<\/sup> \u00f7 73<\/sup>.
\n(a) 76<\/sup>
\n(b) 79<\/sup>
\n(c) 70<\/sup>
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (c) 70<\/sup>
\n73-3<\/sup> = 70<\/sup><\/p>\n<\/details>\n
\nQuestion 4.
\nThe value of (\u22121)47<\/sup> is
\n(a) -1
\n(b) 1
\n(c) 0
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) -1<\/p>\n<\/details>\n
\nQuestion 5.
\nExpress 72 as a product of powers.
\n(a) 23<\/sup> \u00d7 32<\/sup>
\n(b) 33<\/sup>\u00a0\u00d7 23<\/sup>
\n(c) 23<\/sup> + 32<\/sup>
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) 23<\/sup> \u00d7 32<\/sup>
\nPrime factors of 72 = 2 \u00d7 2 \u00d7 2 \u00d7 3 \u00d7 3 = 23<\/sup> \u00d7 32<\/sup>.<\/p>\n<\/details>\n
\nQuestion 6.
\nFind the number from the following expanded forms 3 \u00d7 104<\/sup> + 7 \u00d7 102<\/sup> + 5 \u00d7 100<\/sup>.
\n(a) 375
\n(b) 30705
\n(c) 3705
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (b) 30705
\n30000 + 700 + 5 = 30705.<\/p>\n<\/details>\n
\nQuestion 7.
\nThe short notation 104<\/sup> stands for the product.
\n(a) 10 \u00d7 10 \u00d7 10 \u00d7 10
\n(b) 4 \u00d7 10
\n(c) 10 + 10 + 10 + 10
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) 10 \u00d7 10 \u00d7 10 \u00d7 10
\n10 is multiplied four times.<\/p>\n<\/details>\n
\nQuestion 8.
\nSimplify 34<\/sup> \u00f7\u00a034<\/sup>.
\n(a) 30<\/sup>
\n(b) 311<\/sup>
\n(c) 328<\/sup>
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) 30<\/sup>
\nIn division power.<\/p>\n<\/details>\n
\nQuestion 9.
\nThe value of (\u22121)91<\/sup> is
\n(a) 1
\n(b) 0
\n(c) -1
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (c) -1<\/p>\n<\/details>\n
\nQuestion 10.
\nThe value of (\u22121)310<\/sup> is
\n(a) 1
\n(b) -1
\n(c) 0
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) 1<\/p>\n<\/details>\n
\nQuestion 11.
\nExpress using exponential notation 343.
\n(a) 37<\/sup>
\n(b) 73<\/sup>
\n(c) 7
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (b) 73<\/sup>
\nPrime factors of 343 = 7 \u00d7 7 \u00d7 7.<\/p>\n<\/details>\n
\nQuestion 12.
\nExpress 729 as a power of 3.
\n(a) 93<\/sup>
\n(b) 34<\/sup>
\n(c) 36<\/sup>
\n(d) 32<\/sup><\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (c) 36<\/sup><\/p>\n<\/details>\n
\nQuestion 13.
\nIn 104<\/sup>, 10 is called :
\n(a) Base
\n(b) Power
\n(c) Exponent
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) Base<\/p>\n<\/details>\n
\nQuestion 14.
\nThe number which is multiplied by (\u22128)-1<\/sup> to obtain a product equal to 10-1<\/sup> is ____.
\n(a) \\(\\frac { -4 }{ 5 }\\)
\n(b) \\(\\frac { -3 }{ 5 }\\)
\n(c) \\(\\frac {- 1 }{ 5 }\\)
\n(d) \\(\\frac { -5 }{ 4 }\\)<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) \\(\\frac { -4 }{ 5 }\\)<\/p>\n<\/details>\n
\nQuestion 15.
\nExpress in exponential form 2 \u00d7 2 \u00d7 a \u00d7 a.
\n(a) 22<\/sup>. a2<\/sup>
\n(b) 22<\/sup>. 20<\/sup>
\n(c) 22<\/sup> + a2<\/sup>
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) 22<\/sup>. a2<\/sup>
\n2 is multiplied two times and also a is multiplied two times.<\/p>\n<\/details>\n
\nQuestion 16.
\nSimplify 52<\/sup> \u00f7 56<\/sup>.
\n(a) 5-4<\/sup>
\n(b) 54<\/sup>
\n(c) 58<\/sup>
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) 5-4<\/sup>
\nAs 52-6<\/sup> = 5-4<\/sup>.<\/p>\n<\/details>\n
\nQuestion 17.
\nThe value of (\u22121)500<\/sup> is
\n(a) 1
\n(b) -1
\n(c) 0
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) 1<\/p>\n<\/details>\n
\nQuestion 18.
\nWhich is greater 23<\/sup> or 32<\/sup>.
\n(a) 23<\/sup>
\n(b) 32<\/sup>
\n(c) Equal
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (b) 32<\/sup>
\n23<\/sup> = 2 \u00d7 2 \u00d7 2 = 8, 32<\/sup> = 3 \u00d7 3 = 9.<\/p>\n<\/details>\n
\nQuestion 19.
\nSimplify 0 \u00d7 122<\/sup>.
\n(a) 1
\n(b) 20
\n(c) 0
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (c) 0
\n0 is multiplied by any number gives result 0.<\/p>\n<\/details>\n
\nQuestion 20.
\nFind the value of \\(\\frac{3^{5}}{3^{5}}\\)
\n(a) 1
\n(b) 0
\n(c) 3
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) 1
\n35-5<\/sup> = 30<\/sup> = 1<\/p>\n<\/details>\n
\nQuestion 21.
\nThe value of 110<\/sup> is ________ .
\n(a) 3
\n(b) 11
\n(c) 1
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (c) 1<\/p>\n<\/details>\n
\nQuestion 22.
\nThe exponential form of 100000 is
\n(a) 103<\/sup>
\n(b) 104<\/sup>
\n(c) 105<\/sup>
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (c) 105<\/sup><\/p>\n<\/details>\n
\nQuestion 23.
\n(-1)3<\/sup> find value.
\n(a) 1
\n(b) -1
\n(c) -3
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (b) -1
\nNegative sign has odd number exponent.<\/p>\n<\/details>\n
\nQuestion 24.
\nSimplify 23<\/sup> \u00d7 5.
\n(a) 30
\n(b) 40
\n(c) 20
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (b) 40
\n23<\/sup> \u00d7 5 = 2 \u00d7 2 \u00d7 2 \u00d7 5 = 40.<\/p>\n<\/details>\n
\nQuestion 25.
\nFind the value of 20<\/sup> + 30<\/sup> + 40<\/sup>.
\n(a) 3
\n(b) 0
\n(c) 9
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) 3
\n20<\/sup> + 30<\/sup> + 40<\/sup> = 1 + 1 + 1 = 3.<\/p>\n<\/details>\n
\nQuestion 26.
\nExpress 432 as a product of powers of prime factors.
\n(a) 23<\/sup>\u00d733<\/sup>
\n(b) 8\u00d727
\n(c) 16\u00d727
\n(d) 24<\/sup>\u00d733<\/sup><\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (d) 24<\/sup>\u00d733<\/sup><\/p>\n<\/details>\n
\nQuestion 27.
\nFind the value of 112<\/sup>.
\n(a) 121
\n(b) 22
\n(c) 5.5
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) 121
\n11 \u00d7 11 = 121.<\/p>\n<\/details>\n
\nQuestion 28.
\nSimplify a2<\/sup> \u00d7 a4<\/sup>.
\n(a) a8<\/sup>
\n(b) a6<\/sup>
\n(c) a2<\/sup>
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (b) a6<\/sup>
\nPowers are added as the base of both numbers is a.<\/p>\n<\/details>\n
\nQuestion 29.
\nFind the number from the following expanded forms
\n8 \u00d7 104<\/sup> + 6 \u00d7 103<\/sup> + 0 \u00d7 102<\/sup> + 4 \u00d7 101<\/sup> + 5 \u00d7 100<\/sup>.
\n(a) 86045
\n(b) 8645
\n(c) 86450
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) 86045
\n8 \u00d7 104<\/sup> + 6 \u00d7 103<\/sup> + 0 \u00d7 102<\/sup> + 4 \u00d7 101<\/sup> + 5 \u00d7 100<\/sup> = 80000 + 6000 + 0 + 40 + 5.<\/p>\n<\/details>\n
\nQuestion 30.
\nMultiplicative inverse of \\(\\frac { 1 }{ 5 }\\) is
\n(a) 10
\n(b) 3
\n(c) 5
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (c) 5<\/p>\n<\/details>\n
\nQuestion 31.
\nSolve 14<\/sup>.
\n(a) 1
\n(b) 4
\n(c) -1
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) 1
\n1 is multiplied four times, i.e. 1 \u00d7 1 \u00d7 1 \u00d7 1.<\/p>\n<\/details>\n
\nQuestion 32.
\nSolve 22<\/sup> \u00d7 23<\/sup>.
\n(a) 26<\/sup>
\n(b) 25<\/sup>
\n(c) 46<\/sup>