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
ANSWERS
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
MCQs Questions for Class 7 Maths
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| Maths Worksheets for Other Chapters of Class 7 |
1. Integers questions for class 7
2. HCF and LCM questions for class 7
3. Fraction questions for class 7
4. Decimals class 7 worksheets
6. Rational numbers class 7 worksheet
7. Algebraic expressions worksheet for class 7
8. Linear equations class 7 worksheet
9. Ratio and proportion class 7 worksheet
10. Percentage worksheet for class 7
11. Profit and loss class 7 worksheet
12. Simple interest worksheet for class 7
13. Lines and angles class 7 worksheets
14. Triangle and its properties class 7 worksheets
15. Congruence of triangles class 7 worksheets
16. Symmetry worksheet for class 7
17. Constructions worksheet for class 7
18. Perimeter and area class 7 worksheets
19. Data handling class 7 worksheet
Some Extra Worksheets for ICSE Maths Class 7
1. Sets Class 7 ICSE Worksheets
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