Question

Find cube root of 91125 for estimation method

Answer 1

We need to find the cube root of 91125

Now, lets make batch of 3, as 091 125

Lets take 125, now the number is ending in 5 so the unit digit of the number will be 5

now 091, we need to see which number cube will be nearest to 091

and we have the cube of 4 = 64

So, the number is 45.

(45)³ = 91125

∛91125 = 45

Our number is 45