CBSE Board Practice

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CBSE Grade VIII - Cubes and Cube Roots
Question 1
1.
The smallest number by which 2048 must be multiplied so that the product is a perfect cube is?
  • 3
  • 2
  • 1
  • 4
  • 0
Question 2
2.
    • Find the cube root of
    • 4096
  • 16
  • 259
  • 256
  • 13
  • 19
Question 3
3.
    • Find the cube of
    • 29
  • 24389
  • 24392
  • 24386
  • 841
  • 844
Question 4
4.
Which of the following is not a perfect cube?
  • 343
  • 216
  • 8
  • 515
  • 125
Question 5
5.
Which of the following is a perfect cube?
  • 343
  • 730
  • 127
  • 998
  • 7
Question 6
6.
    • Find the value of
    • 21 3
       
    • +
    • 20 3
       
  • 17261
  • 17260
  • 17259
  • 17262
  • 17264
Question 7
7.
    • Find the
    • cube root
    • of
    • 1
      64
  • (
    -1
    4
    		 )
  • 1
    4
  • 1
    6
  • 1
    2
  • 3
    4
Question 8
8.
The smallest number by which 1024 must be divided so that the quotient is a perfect cube is?
  • 2
  • 4
  • 1
  • 3
  • 0
Question 9
9.
    • Find the
    • cube root
    • of
    • -27
  • -4
  • 0
  • -3
  • -5
  • -2
Question 10
10.
    • Find the value of
    • 16 3
       
    • −
    • 15 3
       
  • 721
  • 722
  • 720
  • 723
  • 718