A worksheet with a tree outline template for KS3 students to practise more advanced prime factorisation with factor trees (they should be able to make short factor trees of 2-3 steps before attempting this sheet).
This will help as a buildup to HCF and LCM calculations and as an aid to indices and powers too. This resource includes a blank copy which can be used for teacher-directed tasks as well as an example.
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Review this resource31/01/2019