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)
2
(ii)
3
(iii)
0
(iv)
1
(v)
4
Question
2
2.
Find the
cube root
of
125
64
(i)
5
4
(ii)
3
4
(iii)
7
4
(iv)
5
6
(v)
5
2
Question
3
3.
Find the cube root of
15625
(i)
25
(ii)
22
(iii)
28
(iv)
628
(v)
625
Question
4
4.
Find the cube of
18
(i)
5829
(ii)
5835
(iii)
5832
(iv)
324
(v)
327
Question
5
5.
Which of the following is a perfect cube?
(i)
217
(ii)
1000
(iii)
24
(iv)
124
(v)
67
Question
6
6.
Which of the following is not a perfect cube?
(i)
1000
(ii)
27
(iii)
343
(iv)
512
(v)
219
Question
7
7.
The smallest number by which 32 must be multiplied so that the product is a perfect cube is?
(i)
2
(ii)
4
(iii)
1
(iv)
3
(v)
0
Question
8
8.
The smallest number by which 10125 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
√
8
27
=
(i)
0
(ii)
2
(iii)
2
3
(iv)
4
3
(v)
2
5
Question
10
10.
3
√
0.0270
=
(i)
0.03
(ii)
0.3
(iii)
0.2
(iv)
0.5
(v)
0.4
Question
11
11.
Simplify
3
√
729
+
3
√
343
3
√
8
−
3
√
1331
=
(i)
(
-16
11
)
(ii)
(
-14
9
)
(iii)
(
-16
9
)
(iv)
-2
(v)
(
-16
7
)
Assignment Key
1) (i)
2) (i)
3) (i)
4) (iii)
5) (ii)
6) (v)
7) (i)
8) (iii)
9) (iii)
10) (ii)
11) (iii)
