CBSE Class 8 Maths Exponents and Powers Quiz 3

1. (2° + 4^-1) × 2² is equal to

A

2

B

3

C

4

D

5

2. (2^-1 + 3^-1 + 5^-1)⁰ is equal to

A

2

B

3

C

5

D

1

3. 3^m + 3^-3 = 3⁵ ⇒ m is equal to

A

1

B

2

C

3

D

4

4. (-2)^m+1 × (-2)⁴ = (-2)⁶ ⇒ m =

A

0

B

1

C

-1

D

none of these.

5. (-1)⁵⁰ is equal to

A

-1

B

1

C

50

D

-50

6. (-1)⁵¹ is equal to

A

-1

B

1

C

51

D

-51

7. 149600000000 is equal to

A 1.496 × 10¹¹ B 1.496 × 10¹⁰ C 1.496 × 10¹² D 1.496 × 10⁸

8. 300000000 is equal to

A 3 × 10⁸ B 3 × 10⁷ C 3 × 10⁶ D 3 × 10⁹

9. 0.000007 is equal to

A 7 × 10^-6 B 7 × 10^-5 C 7 × 10^-4 D 7 × 10^-3

10. 384467000 is equal to

A 3.84467 × 10⁸ B

3.84467 × 10³

C 3.84467 × 10⁷ D 3.84467 × 10⁶