Given number as 512. We need to find out the cube root using estimation method.
Step 1: start making groups of three digits starting from the units place.
⇒ 512 as first group and it has no second group
Step 2: first group will give us the units digit of the cube root.
⇒ 512 ends with 2, cube of 2 = 23 = 8
∴ 8 will go in units place
Step 3: Now, we do not have second group to calculate
8 becomes the required cube root.
∴ = 8
Hence, the cube root of 512 using estimation method is 8
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