Question

Use the method of estimation to find the cube root of the following a) 704969

Answer 1

Answer:

1 - mke groups

704 - 2nd group

969 - 1st group

2- take the once digit of 2nd group = 4

                                               now = 4X4X4

                                                       = 64

3- now consider the first group that is 969

         nw take 729<969<1000

                       9power3<969<10power3

                           ans=94