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
-8

(i)

-1
(ii)

1
(iii)

-3
(iv)

-4
(v)

-2

Question 2

2.

Find the
cube root
of
27
64

(i)

3
4
(ii)

1
2
(iii)

5
4
(iv)

1
4
(v)

3
2

Question 3

3.

Find the cube root of
5832

(i)

15
(ii)

21
(iii)

18
(iv)

324
(v)

327

Question 4

4.

Find the cube of
10

(i)

100
(ii)

997
(iii)

1003
(iv)

1000
(v)

103

Question 5

5.

Which of the following is a perfect cube?

(i)

729
(ii)

5
(iii)

30
(iv)

999
(v)

65

Question 6

6.

Which of the following is not a perfect cube?

(i)

729
(ii)

343
(iii)

1000
(iv)

64
(v)

30

Question 7

7.

The smallest number by which 1944 must be multiplied so that the product is a perfect cube is?

(i)

1
(ii)

0
(iii)

4
(iv)

2
(v)

3

Question 8

8.

The smallest number by which 5184 must be divided so that the quotient is a perfect cube is?

(i)

4
(ii)

3
(iii)

0
(iv)

2
(v)

1

Question 9

9.

3
√

1
27
=

(i)

1
(ii)

(
-1
3
)
(iii)

1
5
(iv)

1
3

Question 10

10.

3
√

2.1970
=

(i)

0.13
(ii)

1.5
(iii)

1.3
(iv)

1.4
(v)

1.2

Question 11

11.

Simplify
3
√

216

+

3
√

1728

3
√

1331

−

3
√

729
=

(i)

8
(ii)

18
4
(iii)

9
(iv)

10
(v)

18

Assignment Key