Question

hey friends plz tell me short trick to find out cube root,,,,,, only short trick plzzzzz!! ❤​

Answer 1

To find out the cube roots of a perfect cube, you need to know some of the basic cubes

13= 1, 23 = 8, 33= 27, 43= 64, 53 = 125

63= 216, 73 =343, 83= 512, 93 = 729, 103 = 1000

13

1 Cube of 1 ends with 1

23

8 Cube of 2 ends with 8

33

27 Cube of 3 ends with 7

43

64 Cube of 4 ends with 4

53

125 Cube of 5 ends with 5

63

216 Cube of 6 ends with 6

73

343 Cube of 7 ends with 3

83

512 Cube of 8 ends with 2

93

729 Cube of 9 ends with 9

103

1000 Cube of 10 ends with 0

To find out the cube root of any perfect cube, follow the following steps:

Find out the cube root of 19683.

• Step 1: underline the last three digits and see it is ending with 3 that means

Explanation: Look at the table; we can see that cube of 7 ends with 3, so the unit digit of the required number would be 7  

Step 2: Now look in the table and find the greatest cube which is less than 19. We can see in this case it is 8 and its cube root is 2.

So the digit at tens place would be 2

Therefore the cube root of 19683 is 27.