Question

estimate the cube root of 678910. with step by step explanation​

Answer 1

Step 1:

Make group of 3 digit, starting from right

Step 2:

The unit digit of cube root will be

Unit digit of cube root of 857375 = Unit digit of cube root of 375.

Since 375 ends in 5, it’s cube root will end in 5.

(As 5 3 = 12 5 , 1 5 3 = 337 5 )

∴ Unit digit of cube root = 5