Class 8 - Exponents & Powers Worksheet 2
1. Express 9⁄81 and -9⁄81 as powers of a rational number.
a) (3⁄9)2, (-3⁄9)2 b) (-3⁄9)2, (3⁄9)2
c) (9⁄3)2, (-9⁄3)2 d) None of these
2. Express {(-5⁄2)-2}-3 as a power of a rational number with negative exponent.
a) (-5⁄2)2 b) (2⁄5)-6
c) (2⁄5)6 d) (-2⁄5)-6
3. Find the product of the cube of (-3) and square of (+5).
a) -675 b) -625
c) -235 d) 675
4. Express 3-2 × 3-3 as a power of 3 positive exponent.
a) 1⁄36 b) 1⁄3-6
c) 1⁄-35 b) 1⁄35
5. Solve (1⁄4)-2 ÷ (1⁄4)-3.
a) 4 b) 4-6
c) 1⁄4 d) (1⁄4)-5
6. Simplify (64×p-3)⁄(8-3×10×p-5) here p ≠ 0.
a) (85⁄10)p2 b) (8⁄10)p2
c) (85⁄10)p-8 d) None of these
7. Find the value of 'n', so that (5⁄7)-2 × (5⁄7)-14 = (5⁄7)8n
a) -2 b) -14
c) 10 d) 3⁄2
8. Find the value of n-3 if n = (1000)1-4 ÷ (1000)0.
a) 1000-3 b) 106
c) 10009 d) 10-9
9. By what number (-20)-1 be divided so that quotient may be equal to (-20)-1.
a) -20 b) 1
c) 0 d) (-20)-2
10. Express 32-2 as a power with base 2.
a) 2-10 b) 232
c) 2-8 d) 210
11. Find the value m, if 52m-1 ÷ 25 = 125.
a) 5 b) 25
c) 29 d) 3
12. Find the multiplicative inverse of (-6)-2 ÷ (90)-1.
a) 3⁄5 b) -5⁄3
c) 5⁄3 d) None of these
13. The value of (-4)-2 is 1⁄-16. Mark True /False.
a) False b) True
14. For negative integer x and y, then px × py = px+y (p≠0). Mark True/False.
a) False b) True
15. 20 × 50 = 100. Mark True/False.
a) True b) False
16. The value of 57 − 27 is 17. Mark True/False.
a) False b) True
17. Multiplicative inverse of (-3)5 is 1⁄-243. Mark True /False.
a) True b) False
18. The value of [1-3 + 2-2 + 3-1] × 62 is ____.
a) 64 b) 6-4
c) 57 d) None of these
19. By what number should (-2⁄3)-3 be divided so that the quotient may be (27⁄2)-2.
a) 27⁄39 b) 39⁄27
c) -1⁄9 d) -2⁄9
20. A new-born elephant weight is 15 kg. How many kilograms might a five-year-old elephant weight if its weight increases by the power of 2 in 5year?
a) 225 Kg b) 150 Kg
c) 30 Kg d) 152 Kg
If you want to download the above worksheet, please click below link.
Exponents And Powers Worksheet-2Download the pdf
Exponents & Powers Worksheet - 1
Exponents & Powers Worksheet - 2
Exponents & Powers Worksheet - 3
Exponents & Powers Worksheet - 4
Answer Sheet
Exponents-And-Powers-AnswerDownload the pdf
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