ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade VIII - Square Root and Cube Root
Question 1
1.
The smallest number by which 2048 must be multiplied so that the product is a perfect cube is?
  • 0
  • 4
  • 3
  • 2
  • 1
Question 2
2.
Find the greatest 2 digit number which is a perfect square?
  • 83
  • 81
  • 79
  • 80
  • 82
Question 3
3.
    • Find the value of
    • 15 3
       
    • +
    • 14 3
       
  • 6117
  • 6120
  • 6119
  • 6118
  • 6122
Question 4
4.
Which of the following is a perfect cube?
  • 342
  • 8
  • 122
  • 1002
  • 730
Question 5
5.
    • Find the cube root of
    • 6859
  • 16
  • 364
  • 19
  • 22
  • 361
Question 6
6.
Find the least number that must be subtracted from 102 to get a perfect square?
  • 3
  • 0
  • 5
  • 1
  • 2
Question 7
7.
    • If

    • √

      1681
    • =
    • 41
    • ,
    • find the value of

    • √

      168100
  • 412
  • 408
  • 410
  • 41
  • 4100
Question 8
8.
    • Find the number of numbers between
    • 16 2
       
    • and
    • 17 2
       
  • 33
  • 32
  • 35
  • 31
  • 29
Question 9
9.
    • If

    • √

      900
    • =
    • 30
    • ,
    • find the value of

    • √

      9000000
  • 300
  • 2998
  • 3000
  • 30000
  • 3002
Question 10
10.
    • If

    • √

      7056
    • =
    • 84
    • ,
    • find the value of

    • √

      70.56
  • 6.4
  • 0.8
  • 84
  • 8.4
  • 10.4