Exponents and Powers Class 7 Worksheet

# Exponents and Powers Class 7 Worksheet

Let us solve these Exponents and Powers Class 7 Worksheets.

## Exponents and Powers Class 7 Worksheet with Answers

1. Fill in the blanks.

a. The reciprocal of 5/7 is __________ .

b. If 648 = 2m × 3n, then m = __________, and n = _____ .

c. (50 + 60) (70 – 40) = __________ .

d. If (2–3x)2 = 43, then x = __________ .

e. (–1)99 = __________ .

f. The value of 33 is ____________.

g. The exponential form of 9 × 9 × 9 × ... multiplied 9 times is ____________.

h. Another expression for 74 × y4 is ____________.

i. The value of (32)2 is ____________.

j. The simplified form of x8 ÷ x5 is ____________.

k. The exponential form of 16 is ____________.

l. The simplified form of (52)3 × (52)2 is ____________.

2. Write the following in exponential form.

a. 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3

b. 7 × 7 × 7 × 7 × 7 × 7

c. 13 × 13 × 13 × 13 × 13 × 13 × 13 × 13

d. -5 × -5 × -5 × -5 × -5 × -5 × -5

3. Write the value of the following exponents.

a. 26

b. 35

c. 73

d. 94

e. 45

13. Simplify the following and write in exponential form.

a. (22)3 × (23)2

b. (32)4 × (32)3 × (33)2 × (34)2

c. (54)3 × (52)5

d. (74)3 × (72)5 × (72)3

1. a. 7/5       b. 3; 4

c. 0           d. -1

e. -1          f. 27

g. 99         h. (7y)4

i. 81          j. x3

k. 24           l. 510

2. a. 39         b. 76

c. 138       d. (-5)7

3. a. 64         b. 243

c. 343       d. 6561

e. 1024

4. a. x3y5        b. -1000

c. 256        d. a26

5. a. 2/531441      b. 4/729

6. a. 9900         b. 1

c. 0                d. 1

7. a. 1/10000    b. (-3/7)5 × 1/b15

8. a. 412/314      b. (5/7)3

9. 1/216

10. 4096/531441

11. (15/11)9

12. 216

13. a. 212        b. 328

c. 522        d. 728

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