Question

15625,Find the cube root of the given number by estimation method.

Answer 1

no need of estimation 25 is the answer

Answer 2

Hi ,

Solution :

15625 is a odd number so it's cube

root has to an odd number.


Step 1 : Make two groups from right

to left .

First group = 625

Second group = 15

Step 2 :

First group 625 unit digit is 5 so unit

digit of cube root will be 5 .

Step 3 :

Second Group 15 it lies between ( 2³ = 8 )

and ( 3³ = 27 ) .

So take the smaller number 2 as ten's

place .

cube root 15625 = 25

I hope this helps you.

: )