Lesson 2, following lesson on prime factors, quick tutorial on how to use prime factors to find HCF and LCM followed by a few questions. Used for low ability KS4 but could easily be used for KS3 ...
A collection of three worksheets on HCF and LCM. The exercises require to find the prime factorisation of a set of 2 or 3 numbers using repeated division and use it to evaluate their HCF and their LCF ...
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