Question

Find the cube root of each of the following numbers by prime factorisation method.

(i) 64
(ii) 512
(iii) 10648
(iv) 27000​

Answer 1

i) 4, ii) 8, iii) 22, iv) 30

Explanation:

Prime factorisation involves taking out factors of each number that are prime so for example 64 can be factored by

64 = 2 × 32

32 = 2 × 16

16 = 2 × 8

8 = 2 × 4

4 = 2 × 2

Answer 2

4, 8, 22, 30 just factor the numbers