Uses Venn diagrams to simplify the task of finding HCF and LCM for KS4 students. This lays the foundations for finding HCF and LCM of algebraic terms. It ends with an exercise that consolidates the material covered and can be used in conjunctions with the HCF and LCM worksheet. ►►►►►►►►►►►►►►►►►►►►►►►►►►►►►►►►►►►►► Related Products• Divisibility Rules for KS4 IGCSE maths and home learners.• Add and Subtract Negative or Directed Numbers KS4 and homeschool• Divisibility Rules for 2, 3, 6 and 25