Question

Find the cube root of the following numbers through estimation?
(ii) 2197
(iii) 3375 (iv) 5832
(i) 512​

Answer 1

Answer:

(I) 8 (ii) 13 (iii) 15 (iv) 18

explanation with an example:- 10648

10 648

( i) (ii)

• First group (I) gives you one's digit of the cube root . Here 648's one's digit = 2
• Second group gives you the next digit

8 ≤ 10 ≤ 27

(2)3 ≤ 10 ≤ (3)3

3√10648 = 22