EduSahara™ Worksheet

EduSahara™ Assignment

Name : Cubes and Cube Roots

Chapter : Powers and Roots

Grade : ICSE Grade VII

License : Non Commercial Use

Question 1

1.

Find the
cube root
of
27

(i)

3
(ii)

2
(iii)

1
(iv)

5
(v)

4

Question 2

2.

Find the
cube root
of
1
27

(i)

1
3
(ii)

1
5
(iii)

(
-1
3
)
(iv)

1

Question 3

3.

Find the cube root of
216

(i)

39
(ii)

36
(iii)

6
(iv)

3
(v)

9

Question 4

4.

Find the cube of
8

(i)

512
(ii)

67
(iii)

515
(iv)

64
(v)

509

Question 5

5.

Which of the following is a perfect cube?

(i)

999
(ii)

8
(iii)

344
(iv)

213
(v)

515

Question 6

6.

Which of the following is not a perfect cube?

(i)

125
(ii)

1003
(iii)

8
(iv)

27
(v)

512

Question 7

7.

The smallest number by which 200 must be multiplied so that the product is a perfect cube is?

(i)

3
(ii)

5
(iii)

6
(iv)

7
(v)

4

Question 8

8.

The smallest number by which 128 must be divided so that the quotient is a perfect cube is?

(i)

4
(ii)

1
(iii)

3
(iv)

0
(v)

2

Question 9

9.

3
√

125
216
=

(i)

1
2
(ii)

5
4
(iii)

5
8
(iv)

5
6
(v)

7
6

Question 10

10.

3
√

0.0080
=

(i)

0.2
(ii)

0.3
(iii)

0.1
(iv)

0.02
(v)

0.4

Question 11

11.

Simplify
3
√

27

+

3
√

216

3
√

512

−

3
√

64
=

(i)

9
6
(ii)

11
4
(iii)

9
2
(iv)

7
4
(v)

9
4

Assignment Key