CBSE Class 7 Mathematics Exponents and Powers MCQs Set B

Question. Find the number from the following expanded form : 9 x 10⁵ + 2 10² + 3 x 10¹
(a) 900203
(b) 912351
(c) 905302
(d) 900230

Answer: D

Question. The value of 3⁰ is ________ .
(a) 0
(b) 3
(c) 1
(d) None of these

Answer: C

Question. Usual form of the expression 9 x 10^-5 is given by ______________ .
(a) 0.00009
(b) 0.000009
(c) 90 x 10^-4
(d) 0.09 x 10^-3

Answer: A

Question. The number 86,800,000,000,000,000,000,000,000 Kg is equal to _________________ .
(a) 8.68 x 10²⁵ Kg
(b) 868 x 10²³ Kg
(c) 86.8 x 10^-25 Kg
(d) 868 x 10^-23 m

Answer: A

Question. The value of 7² is ___________ .
(a) 7
(b) 49
(c) 2
(d) 14

Answer: B

Question. Find the value of 5⁰ x 7⁰ x 3⁰
(a) 1
(b) 1/24
(c) 6
(d) 1/5 x 7 x 3

Answer: A

Question. Find the value of 11²
(a) 22
(b) 9
(c) 121
(d) 13

Answer: C

Question. Usual form of the expression 10⁴ is given by _____________ .
(a) 100,00
(b) 1,0000
(c) 10 x 10⁴
(d) 10,000

Answer: D

Question. Fill in the blank : ( -1 ) even number = _____________ .
(a) 2 x (-1)
(b) 1
(c) 0
(d) -13

Answer: B

Question. Simplify 2²
(a) 3
(b) 10
(c) 4
(d) 7

Answer: C

Question. Multiplicative inverse of 1 / 7 is _________ .
(a) 49
(b) 5
(c) 7
(d) -14

Answer: C

Question. In standard form 56700000 is written as ________________ .
(a) 5.67 x 10⁷
(b) 567 x 10⁷
(c) 5.67 x 10⁵
(d) 567 x 100000

Answer: A

Question. 7 x 10^-5 m is the standard form of which of the following ________ .
(a) 0.0007 m
(b) 0.000007 m
(c) 0.0000007 m
(d) 0.00007 m

Answer: D

Question. The value of 7² ÷ 7³ is given by ___________ .
(a) 1/7
(b) 7
(c) 1/14
(d) -7

Answer: A

Question. The Base in the expression 8¹⁰ is _______________ .
(a) 10
(b) 2
(c) 8
(d) 800

Answer: C

Question. The value of 2⁰ x 3⁰ x 4⁰ is
(a) 1
(b) 0
(c) 24
(d) None of these

Answer: A

Question. The expression , ( 5² + 7² + 3² )⁰ is equals to
(a) 15⁶
(b) – 6
(c) 1
(d) 83

Answer: C

Question.The standard form of 9,030,000,000 is given by ______________ .
(a) 9.03 10⁹
(b) 90.3 10⁷
(c) 903 10⁶
(d) 9.03 10^-9

Answer: A

Question. The value of (1/6)² is _______________ .
(a) 1/12
(b) 2/-3
(c) 1/3
(d) 2

Answer: C

Question. In simplified form ( 3⁰ + 4⁰ + 5⁰ )⁰ is equals to
(a) 12
(b) 3
(c) 12
(d) 1

Answer: D