Shortcuts Method for Finding Cube Root
Number

cube

Last digit of cube

1

= 1

1

2

= 8

8

3

= 27

7

4

= 64

4

5

= 125

5

6

= 216

6

7

=343

3

8

=512

2

9

= 729

9

10

= 1000

0

Find the cube root of the following Number
Questions 1)
Solution:
Step 1: Fist we need to ignore last three digit . i.e 375
Step 2: Now from the above table, find cube of a number which is less than and nearest to 3 .That number is 1 so left part of answer is 1
Step 3: Since the last digit of '3375' is 5 .From the above table the last digit of 5 comes from the cube of 5 . It means right part of answer will 5.
Answer = 15
Questions 2) = ?
Solution:
Step 1: Fist we need to ignore last three digit . i.e 507
Step 2: Now from the above table, find cube of a number which is less than and nearest to 79 .That number is 4 so left part of answer is 4
Step 3: Since the last digit of '79507' is 7 .From the above table the last digit of 8 comes from the cube of 3 . It mean right part of answer will be 3
Answer = 43
Questions 3) = ?
Solution:
Step 1: Fist we need to ignore last three digit . i.e 248
Step 2: Now from the above table, find cube of a number which is less than and nearest to 373 .That number is 7 so left part of answer is 7
Step 3: Since the last digit of '373248' is 8 .From the above table the last digit of 8 comes from the cube of 2 . It mean right part of answer will be 2
Answer = 72
Questions 4) = ?
Solution:
Step 1: Fist we need to ignore last three digit . i.e 976
Step 2: Now from the above table, find cube of a number which is less than and nearest to 438 .That number is 7 so left part of answer is 7
Step 3: Since the last digit of '438976' is 6 .From the above table the last digit of 6 comes from the cube of 6 . It mean right part of answer will be 6
Answer = 76
Questions 5) = ?
Solution:
Step 1: Fist we need to ignore last three digit . i.e 832328
Step 2: Now from the above table, find cube of a number which is less than and nearest to 238 .That number is 6 so left part of answer is 6
Step 3: Since the last digit of '238328' is 8 .From the above table the last digit of 8 comes from the cube of 2 . It mean right part of answer will be 2
Answer = 62