Topic Three (1.3): Multiples, factors and prime numbers

Introduction Icon.png Introduction

First you will revise the meaning of the words factors, multiples and prime numbers. You will then compare pairs of numbers and look for the highest factor that is common to both, and the lowest number that is common to both.


Interact Icon.png Working through your course book

You may also want to watch the following MathsWatch videos and work through the interactive questions using the tab at the top of the screen:

WATCH - Multiples (MathsWatch) Links to an external site.

WATCH -Factors (MathsWatch) Links to an external site.

WATCH -Prime Numbers - Introduction (MathsWatch) Links to an external site.

WATCH -Prime Numbers - Factorisation (MathsWatch) Links to an external site.

WATCH - Lowest Common Multiple (MathsWatch) Links to an external site.

WATCH -Highest Common Factor (MathsWatch) Links to an external site.


Bridge Icon.png Support activities for this topic

The MyMaths 3A digital book introduces these topics at a slower pace. If you'd like to take more time to understand these, look at pages 10–13 for more support.