Class 8 Maths – Chapter 7
Cubes and Cube Roots

Worksheet (Practice for Students)

Section A – Fill in the Blanks

1. The cube of 6 is ________.
2. The cube root of 216 is ________.
3. 1 is a perfect ________.
4. The cube of an even number is always ________.
5. The cube root of 729 is ________.

Section B – True or False

1. 125 is a perfect cube. (True / False)
2. The cube of 10 is 1000. (True / False)
3. Every perfect cube ends with 0 or 5. (True / False)
4. The cube root of 64 is 4. (True / False)
5. −3 is a cube root of −27. (True / False)

Section C – Short Answer Questions

1. Find the cube of 9.
2. Find the cube root of 512.
3. Is 343 a perfect cube? Give reason.
4. Find the smallest number by which 54 should be multiplied to make it a perfect cube.
5. Write the first five perfect cubes.

Section D – Long Answer Questions

1. Find the cube root of 13824 by prime factorisation.
2. Find the smallest number by which 256 must be divided to get a perfect cube.
3. Find the cube of:
   a) 15    b) −7
4. Find the cube root of −1000.

Section E – Challenge Questions

1. If the cube of a number is 512, find the number.
2. Find the cube root of 2744.
3. How many digits are there in the cube of a two-digit number?

📘 Worksheet prepared by Shaktimatha Learning | Class 8 CBSE