Class 8 Math Exponents
Class 8 Mathematics – Exponents
Multiple Choice Questions
| Q.No. | Question | Options |
|---|---|---|
| 1 | What is the value of 70? |
a) 0 b) 1 c) 7 d) 1/7 |
| 2 | What is the value of 40 × 43? |
a) 0 b) 64 c) 12 d) 43 |
| 3 | What is the value of (2/5)2 × (2/5)4? |
a) (2/5)6 b) (4/25)6 c) (2/5)8 d) (4/10)6 |
| 4 | What is 4-1 expressed as a rational number? |
a) -4 b) 4 c) 1/4 d) -1/4 |
| 5 | What is the value of (-5)2? |
a) -25 b) 25 c) 10 d) -10 |
| 6 | What is the value of (3/5)3? |
a) 9/25 b) 27/125 c) 9/125 d) 27/25 |
| 7 | What is the value of (-4)4 × (1/4)3? |
a) -4 b) 4 c) -16 d) 16 |
| 8 | What is the value of (2/7)4 × (7/2)3? |
a) 2/7 b) 7/2 c) 1 d) 14/4 |
| 9 | What is the value of (33 – 53)0? |
a) 0 b) 1 c) -98 d) 98 |
| 10 | Which of the following is equal to (3/5)3? |
a) (5/3)3 b) (5/3)-3 c) (3/5)-3 d) 9/15 |
| 11 | What is the value of 25-1? |
a) -25 b) 25 c) 1/25 d) -1/25 |
| 12 | What is the value of (1/3)3? |
a) 1/27 b) 1/9 c) 3 d) 27 |
| 13 | What is the value of 20 – 30? |
a) (-1)0 b) 0 c) 1 d) -1 |
| 14 | What is the value of 40 × 43? |
a) 43 b) 44 c) 40 d) 12 |
| 15 | Find the value of x if 4x × 4-1 = 4-4 |
a) -3 b) 3 c) -5 d) 5 |
| 16 | What is the value of 80 + 8-1? |
a) 0 b) 1 c) 1 + 1/8 d) 9/8 |
| 17 | Which number should be multiplied by (2/3)3 to get (4/5)3? |
a) (6/5)3 b) (8/15)3 c) (6/5) d) (8/15) |
| 18 | By what number should (1/3)3 be multiplied to get (2/3)3? |
a) 23 b) 8 c) 2 d) 1/2 |
| 19 | If 53x+1 + 25 = 125, what is the value of x? |
a) 0 b) 1 c) 2 d) 3 |
| 20 | What is the value of [(4/3)4 ÷ (1/4)3]-1? |
a) (4/3)4 × (1/4)3 b) (3/4)4 × 43 c) (4/3)-4 × (1/4)-3 d) (3/4)4 × (4/1)3 |
| Answer Key | ||
|---|---|---|
| 1. b) 1 | 2. d) 43 | 3. a) (2/5)6 |
| 4. c) 1/4 | 5. b) 25 | 6. b) 27/125 |
| 7. b) 4 | 8. a) 2/7 | 9. b) 1 |
| 10. b) (5/3)-3 | 11. c) 1/25 | 12. a) 1/27 |
| 13. b) 0 | 14. a) 43 | 15. a) -3 |
| 16. d) 9/8 | 17. a) (6/5)3 | 18. b) 8 |
| 19. b) 1 | 20. b) (3/4)4 × 43 | |
Practice these questions to master the concept of exponents!
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