GCSE Maths (9-1) Prime Factors, HCF, LCM

Full lesson powerpoint and pdf which includes:

• Number Facts (Factors, Multiples, Prime Numbers)
• Writing a number in prime factor form
• Finding the HCF of two numbers
• Finding the HCF of three numbers
• Finding the LCM of two numbers
• Finding the LCM of three numbers
• Questions with full solutions and answers for the above
• Worded Problem-Solving HCF/LCM Walkthrough & Questions
• Using your casio calculator to produce prime factorisation of a number

Method used: Listing, circling common factors, venn diagrams

I have not included printable worksheets as all questions can be produced in exercise books, and some prime factor trees can be quite long!
If you would prefer to have worksheets anyway, please ask and I will be happy to post those also.