The **cube root** of a number is another number that, when multiplied three times, makes the first number.

To find the **unit place of the cube root** always remember the following points:

• If the last digit of a cube root is 8 then the unit digit will be 2.

• If the last digit of a cube root is 2 then the unit digit will be 8.

• If the last digit of a cube root is 3 then the unit digit will be 7.

• If the last digit of a cube root is 7 then the unit digit will be 3.

• If the last digit of a cube root is other than 2, 3, 7 and 8 then put the same number as the unit digit.

## Cubes from 1 to 30

The cube roots of numbers 1 to 30 are mentioned below:

1 x 1 x 1= 1

2 x 2 x 2 =8

3 x 3 x 3 =27

4 x 4 x 4 =64

5 x 5 x 5 =125

6 x 6 x 6 =216

7 x 7 x 7 =343

8 x 8 x 8 =512

9 x 9 x 9 =729

10 x 10 x 10 =1,000

11 x 11 x 11 =1,331

12 x 12 x 12 =1,728

13 x 13 x 13 =2,197

14 x 14 x 14 =2,744

15 x 15 x 15 =3,375

16 x 16 x 16 =4,096

17 x 17 x 17 =4,913

18 x 18 x 18 =5,832

19 x 19 x19 =6,895

Also read = NCERT Solutions Class 7 Social Science Geography Air

20 x 20 x20 =8,000

21 x 21 x 21 =9,261

22 x 22 x 22 =10,648

23 x 23 x 23 =12,167

24 x 24 x 24 =13,824

25 x 25 x 25 =15,625

26 x 26 x 26 =17,576

27 x 27 x 27 =19,683

28 x 28 x 28 =21,952

29 x 29 x 29 =24,389

30 x 30 x 30 =27,000