Using factor trees to find Highest Common Factors

Useful. Thanks for sharing.

This is a useful worksheet to consolidate the process of finding HCF using the prime factor decomposition of two numbers. Students have to write a number as a product of it's prime factors and then circle all the common factors to find the HCF. I personally prefer the Venn diagram method but this is a useful worksheet if this is the way you teach it, could be used as a homework task too. Thank you for sharing.