In factoring out the greatest common factor, we must first find the greatest common factor. So what we’re going to do is we’re going to write down each term of this expression.

Revise Highest Common Factor and Lowest Common Multiple, HCF and LCM using prime factors and how to use Venn diagrams in this Bitesize guide.

Factors are numbers that divide exactly into a number. They are the multiplication “facts” of the number. A common factor is a factor that is shared by two or more numbers. The number 1 will ...