Here we are providing Class 7 Math Important Objective Chapter – 13 Exponents and Powers because its very important for Class 7 students as we all know that every board exam question has MCQs so that students should practice these questions so that students can get good marks in board. Class 7 Math Important Objective Chapter – 13 Exponents and Powers is an extremely important and its also a year in which students learn the fundamentals of concepts that help them lay a solid foundation for their higher education. Here we are providing in Class 7 Math Important Objective Chapter – 13 Exponents and Powers 40+ questions so that students practice more and more. If you want class wise Notes Then Click Here
Class 7 Math Important Objective Chapter – 13 Exponents and Powers
1. The exponential form of 3125 is
(a) 5²
(b) 5³
(c) 54
(d) 55
Ans-(d)
2. Multiplicative inverse of 1/7 is
(a) 14
(b) 7
(c) 49
(d) None of these
Ans-(b)
3. The exponential form of 10000 is
(a) 103
(b) 104
(c) 105
(d) none of these
Ans-(b)
4. The value of (-2)4 is ………..
(a) -16
(b) 16
(c) 8
(d) – 8
Ans-(b)
5. Simplify 2 × 103.
(a) 1000
(b) 2000
(c) 16000
(d) None of these
Ans-(b)
6. If x is a rational number and ‘a’ and ‘b’ are whole numbers then the value of xa × xb is
(a) xa-b
(b) xab
(c) xa/b
(d) xa+b
Ans-(d)
7. The exponential form of 81 is
(a) 34
(b) 33
(c) 32
(d) none of these
Ans-(a)
8. Find 73 ÷ 73.
(a) 76
(b) 79
(c) 70
(d) None of these
Ans-(c)
9. 1.2 × 1010 in the normal form is
(a) 120000000000
(b) 12000000
(c) 12000000
(d) 12000 000 000
Ans-(d)
10. The exponential form of 125 is
(a) 54
(b) 53
(c) 52
(d) none of these
Ans-(b)
11. The value of (−1)47 is
(a) -1
(b) 1
(c) 0
(d) None of these
Ans-(a)
12. The exponential form of 32 is
(a) 23
(b) 24
(c) 25
(d) none of these
Ans-(c)
13. Express 72 as a product of powers.
(a) 23 × 32
(b) 33 × 23
(c) 23 + 32
(d) None of these
Ans-(a)
14. The exponential form of 243 is
(a) 35
(b) 34
(c) 33
(d) 32
Ans-(a)
15. Find the number from the following expanded forms 3 × 104 + 7 × 102 + 5 × 100.
(a) 375
(b) 30705
(c) 3705
(d) None of these
Ans-(b)
16. The exponential form of 64 is
(a) 25
(b) 26
(c) 27
(d) 28
Ans-(b)
17. The short notation 104 stands for the product.
(a) 10 × 10 × 10 × 10
(b) 4 × 10
(c) 10 + 10 + 10 + 10
(d) None of these
Ans-(a)
18. The exponential form of 625 is
(a) 52
(b) 53
(c) 54
(d) 55
Ans-(c)
19. Simplify 34 ÷ 34.
(a) 30
(b) 311
(c) 328
(d) None of these
Ans-(a)
20. The exponential form of 1000 is
(a) 101
(b) 102
(c) 103
(d) 104
Ans-(c)
21. The value of (−1)91 is
(a) 1
(b) 0
(c) -1
(d) None of these
Ans-(c)
22. The value of (- 2)3 is
(a) 8
(b) -8
(c) 16
(d) -16
Ans-(b)
23. The value of (−1)310 is
(a) 1
(b) -1
(c) 0
(d) None of these
Ans-(a)
24. The value of (- 2)4 is
(a) 8
(b) -8
(c) 16
(d) -16
Ans-(c)
25. Express using exponential notation 343.
(a) 37
(b) 73
(c) 7
(d) None of these
Ans-(b)
26. What is the base in 82?
(a) 8
(b) 2
(c) 6
(d) 10
Ans-(a)
27. Express 729 as a power of 3.
(a) 93
(b) 34
(c) 36
(d) 32
Ans-(c)
28. What is the exponent in 82?
(a) 8
(b) 2
(c) 16
(d) 6
Ans-(b)
29. In 104, 10 is called :
(a) Base
(b) Power
(c) Exponent
(d) None of these
Ans-(a)
30. (-1)even number =
(a) -1
(b) 1
(c) 0
(d) none of these
Ans-(b)
31. The number which is multiplied by (−8)-1 to obtain a product equal to 10-1 is ____.
(a) −4/5
(b) −3/5
(c) −1/5
(d) −5/4
Ans-(a)
32. (-1)odd number =
(a) -1
(b) 1
(c) 0
(d) none of these
Ans-(a)
33. Express in exponential form 2 × 2 × a × a.
(a) 22. a2
(b) 22. 20
(c) 22 + a2
(d) None of these
Ans-(a)
34. 0 × 104 =
(a) 0
(b) 104
(c) 1
(d) none of these
Ans-(a)
35. Simplify 52 ÷ 56.
(a) 5-4
(b) 54
(c) 58
(d) None of these
Ans-(a)
36. If 23 × 24 = 2?, then ? =
(a) 3
(b) 4
(c) 1
(d) 7
Ans-(d)
37. The value of (−1)500 is
(a) 1
(b) -1
(c) 0
(d) None of these
Ans-(a)
38. (ab)m =
(a) am bm
(b) amb
(c) abm
(d) ab
Ans-(a)
39. Which is greater 23 or 32.
(a) 23
(b) 32
(c) Equal
(d) None of these
Ans-(b)
40. 333 in standard form is
(a) 3.33 × 102
(b) 3.33 × 103
(c) 3.33 × 101
(d) 3.33 × 104
Ans-(a)
41. Simplify 0 × 122.
(a) 1
(b) 20
(c) 0
(d) None of these
Ans-(c)
41. Find the value of 35 / 35
(a) 1
(b) 0
(c) 3
(d) None of these
Ans-(a)
42. 3430000 in standard form is
(a) 3.43 × 106
(b) 3.43 × 104
(c) 3.43 × 102
(d) 3.43 × 1010
Ans-(a)
43. The value of 110 is ________ .
(a) 3
(b) 11
(c) 1
(d) None of these
Ans-(c)
44. 100000000000 in standard form is
(a) 1 × 108
(b) 1 × 109
(c) 1 × 1010
(d) 1 × 1011
Ans-(d)
45. The exponential form of 100000 is
(a) 103
(b) 104
(c) 105
(d) none of these
Ans-(c)
46. (-1)3 find value.
(a) 1
(b) -1
(c) -3
(d) None of these
Ans-(b)
47. Simplify 23 × 5.
(a) 30
(b) 40
(c) 20
(d) None of these
Ans-(b)
48. Find the value of 20 + 30 + 40.
(a) 3
(b) 0
(c) 9
(d) None of these
Ans-(a)
