CBSE Class 8 Maths Exponents and Powers Quiz 5

1. The value of 2^-2 is:

A

4

B ¼ C 2 D

½

2. The multiplicative inverse of 7^-2is:

A

7²

B

7

C

1/7²

D

1/7

3. 2² x 2³ x 2⁴ is equal to:

A 2²⁴ B 2^-5 C 2⁹ D 2^-9

4. 3^-2 x 3^-5 is equal to:

A 3^-7 B 3^-3 C 3^-10 D 3⁷

5. 5⁴/5² is equal to:

A 5⁶ B 5^-6 C 5^-2 D 5²

6. The value of (3⁴)³ is:

A 3 B 3¹² C 3⁷ D None of the above

7. 3² x 4² is equal to:

A

121

B

49

C

144

D

156

8. 5⁷/6⁷ will give the value:

A (5/6)⁷ B (5/6)⁰ C (5/6)^-7 D (6/5)^-7

9. 100⁰+20⁰+5⁰ is equal to

A

125

B

25

C

1/125

D

3

10. If (–3)^m+1 × (-3)⁵ = (-3)⁷, then the value of m is:

A

5

B

7

C

1

D

3