## Class 7 Math Important Objective Chapter – 13 Exponents and Powers

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)