Question

Find the cube roots of the following number using shortcut method
a. 4913
b.35937
c.704969
d.140608​

Answer 1

Answer:Hi ,

Given number is 140608

Solution :

140608 is an even number so it's

cube root has to an even number.

Step 1 :

Make two groups from right to left.

First group = 608

Second group = 140

Step 2 :

First group unit digit 8 . So unit

digit of cube root will be 2 .

( 2 × 2 × 2 = 8 )

Step 3 :

Second group : ( 140 )

140 lies between ( 5³= 125) and ( 6³ = 216)

So ,take the smaller number 5 as ten's

place digit .

Therefore ,

cube root of 140608 = 52

I hope this helps you.

: )

Step-by-step explanation: