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)
3
(ii)
2
(iii)
0
(iv)
1
(v)
5
Question
2
2.
Find the
cube root
of
(
-1
125
)
(i)
1
5
(ii)
(
-3
5
)
(iii)
(
-1
3
)
(iv)
(
-1
7
)
(v)
(
-1
5
)
Question
3
3.
Find the cube root of
8000
(i)
403
(ii)
20
(iii)
23
(iv)
400
(v)
17
Question
4
4.
Find the cube of
13
(i)
2200
(ii)
169
(iii)
2197
(iv)
172
(v)
2194
Question
5
5.
Which of the following is a perfect cube?
(i)
999
(ii)
340
(iii)
515
(iv)
217
(v)
8
Question
6
6.
Which of the following is not a perfect cube?
(i)
729
(ii)
343
(iii)
11
(iv)
1000
(v)
27
Question
7
7.
The smallest number by which 243 must be multiplied so that the product is a perfect cube is?
(i)
1
(ii)
2
(iii)
0
(iv)
4
(v)
3
Question
8
8.
The smallest number by which 16875 must be divided so that the quotient is a perfect cube is?
(i)
4
(ii)
3
(iii)
5
(iv)
7
(v)
6
Question
9
9.
3
√
27
64
=
(i)
1
2
(ii)
1
4
(iii)
3
4
(iv)
5
4
(v)
3
2
Question
10
10.
3
√
1.7280
=
(i)
1.1
(ii)
1.4
(iii)
0.12
(iv)
1.2
(v)
1.3
Question
11
11.
Simplify
3
√
216
+
3
√
1000
3
√
125
−
3
√
64
=
(i)
17
(ii)
18
(iii)
16
(iv)
13
(v)
15
Assignment Key
1) (ii)
2) (v)
3) (ii)
4) (iii)
5) (v)
6) (iii)
7) (v)
8) (iii)
9) (iii)
10) (iv)
11) (iii)
