Topic Eight (1.8): Cube roots

Introduction Icon.png Introduction

We shall now look at finding a cube root, which is the opposite of finding a cube. This is working backwards to find the original number that was cubed.

Interact Icon.png Working through your course book

  • Go to the MyMaths 2B digital book and watch the videos on page 19.
  • Now read through the example on page 18, which shows two ways of finding cube roots.
  • Answer the questions on page 19.
  • You may also want to watch this Corbett Maths video on YouTube:

WATCH - Cube root - Corbettmaths (YouTube) Links to an external site.

You may also want to watch the following MathsWatch video on squares, cubes, square roots and cubed roots, and work through the interactive questions using the tab at the top of the screen:

WATCH - Powers and roots (MathsWatch)

Stretch Icon.png Extension activities for this topic

The MyMaths 2C digital book provides extension material in their problem-solving questions.

If you would like more of a challenge on indices, go to page 13 of the  MyMaths 2C digital book and attempt questions 5–9. 

Review Icon.png MyReview and MyPractice

Now you’ve reached the end of this module, you will need to check your knowledge and understanding before you submit your assignment. Remember to check your answers to the textbook exercises. 

There are extra questions for you to practise what you have learnt in this module in the MyReview and MyPractice sections on pages 21–23. Remember to check your answers to all of the questions in the back of the textbook.