EduSahara™ Assignment
Name : Cubes and Cube Roots
Chapter : Cubes and Cube Roots
Grade : CBSE Grade VIII
License : Non Commercial Use
Question
1
1.
Find the value of
8
3
+
7
3
(i)
855
(ii)
852
(iii)
854
(iv)
856
(v)
858
Question
2
2.
Find the value of
8
3
+
7
3
(i)
857
(ii)
853
(iii)
856
(iv)
854
(v)
855
Question
3
3.
Find the cube root of
1000
(i)
13
(ii)
103
(iii)
7
(iv)
10
(v)
100
Question
4
4.
Find the cube of
22
(i)
487
(ii)
10648
(iii)
10651
(iv)
10645
(v)
484
Question
5
5.
Find the value of
20
3
+
19
3
(i)
14862
(ii)
14859
(iii)
14858
(iv)
14860
(v)
14856
Question
6
6.
Which of the following is a perfect cube?
(i)
30
(ii)
726
(iii)
999
(iv)
126
(v)
343
Question
7
7.
Which of the following is not a perfect cube?
(i)
125
(ii)
512
(iii)
732
(iv)
216
(v)
27
Question
8
8.
The smallest number by which 675 must be multiplied so that the product is a perfect cube is?
(i)
6
(ii)
5
(iii)
4
(iv)
3
(v)
8
Question
9
9.
The smallest number by which 128 must be divided so that the quotient is a perfect cube is?
(i)
1
(ii)
2
(iii)
0
(iv)
3
(v)
4
Question
10
10.
Find the cube root of
15625
(i)
628
(ii)
25
(iii)
22
(iv)
28
(v)
625
Question
11
11.
Find the cube of
8
(i)
64
(ii)
509
(iii)
512
(iv)
67
(v)
515
Question
12
12.
Find the value of
24
3
−
23
3
(i)
1658
(ii)
1656
(iii)
1657
(iv)
1655
(v)
1659
Question
13
13.
Which of the following is a perfect cube?
(i)
124
(ii)
726
(iii)
9
(iv)
29
(v)
64
Question
14
14.
Which of the following is not a perfect cube?
(i)
216
(ii)
1000
(iii)
11
(iv)
343
(v)
27
Question
15
15.
The smallest number by which 2916 must be multiplied so that the product is a perfect cube is?
(i)
3
(ii)
0
(iii)
4
(iv)
2
(v)
1
Question
16
16.
The smallest number by which 128 must be divided so that the quotient is a perfect cube is?
(i)
2
(ii)
0
(iii)
3
(iv)
4
(v)
1
Assignment Key
1) (i)
2) (v)
3) (iv)
4) (ii)
5) (ii)
6) (v)
7) (iii)
8) (ii)
9) (ii)
10) (ii)
11) (iii)
12) (iii)
13) (v)
14) (iii)
15) (iv)
16) (i)
