Question

Find the cube root of 1601613. [3 MARKS]

Answer 1

Concept: 1 Mark
Application: 2 Marks

We know that the last digit is 7(the units place of the number is 3 so if we take the cube root we will get 7 as the last digit). Write 7.

Chopping off the last 3 digits we are left with 1601.

We know that ${11}^3=1331$ and ${12}^3=1728$, so the first digits are 11. Write 11.

The answer is 117.