Finding HCF&LCM using a Venn Diagram
13 slides in total to teach over 2-3 lessons.
Includes a recap of what factors, multiples and prime numbers are, examples of drawing prime factor trees, writing numbers as products of their prime factors in idex form and finding the HCF and LCM using a Venn Diagram.
Includes a harder exam style question and an example of finding the HCF and LCM of three numbers.