Question

de cube rotor the following numbers through estimation ?3375
​

Answer 1

Answer:

For calculating the cube root of 3375, this number has to be separated in two group, i.e. 3 and 375.

considering the group 375:

375 ends with 5 and we know that if digit 5 is at the end of any perfect cube number, then its cube root will have 5 at its unit place only. Therefore, the digits at the units place of the required cube root is taken as 5.

Now consider the other group 3:

We know that the 1

3

=1 and 2

3

=8

Also, 1<3<8

So, 1 will be taken at the tens place. So, the required cube root of 3375 is 15.

3

3375

=15