You are here: Home > Entry Class > Core Maths (Entry) > EN-S02-3 > Resources Close All | Expand All Edit Delete - Last Modified By: MSO at 16/12/2013 12:02:05 PM Revise how to do factor trees and then see how you can use the prime factorisation of two numbers to calculate the LCM and HCFFactors, LCM and HCFEdit Delete - Last Modified By: MSO at 16/12/2013 12:05:54 PM Go to the Factor Trees link and click on 'Find the prime factorization of 2 numbers. GCF and LCM'Factor treesEdit Delete - Last Modified By: dna at 18/12/2013 2:50:19 PM Khan academyEdit Delete - Last Modified By: dna at 18/12/2013 2:53:28 PM BBC bitesize