HCF and LCM

How to do Prime factorisation using factor tree method.

In this tutorial, we learn how to find the Highest Common Factor and Lowest Common Multiple
using factors and multiples.

In this tutorial, we learn how to find the Highest common factor (HCF) and Lowest Common multiples using 2 and 3-way Venn Diagrams.

HCF and LCM.
In this tutorial, we go through more problems involving the HCF and LCM of numbers including a recent past paper question.