Number = 2

Cube of number = 23

     = 2 × 2 × 2

     = 8

 

Cube of a number is a number which we get when a number is multiplied by itself 3 times.

 

Here, 8 is a cube number

They are sometimes also called perfect cubes

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Let’s do some examples

Number

Cube

1

1 × 1 × 1 = 1

2

2 × 2 × 2 = 8

3

3 × 3 × 3 = 27

4

4 × 4 × 4 = 64

5

5 × 5 × 5 = 125

6

6 × 6 × 6 = 216

7

7 × 7 × 7 = 343

8

8 × 8 × 8 = 512

9

9 × 9 × 9 = 729

10

10 × 10 × 10 = 1000

 

Thus, 1, 8, 27, 64, 125, 216, 343, 512, 729, 1000 are cube numbers

 

Is 1 a cube number?

Cube numbers is a number which we get when a number is multiplied by itself 3 times.

So, 1, 8, 27, 64, …. …. are cube numbers

∴ 1 is a cube number

  1. Chapter 7 Class 8 Cubes and Cube Roots
  2. Concept wise

About the Author

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.