Guided worksheets (with examples and questions) to help students draw prime factor trees, write a number as a product of its prime factors and find LCM and HCF of two or more numbers using prime factors and Venn diagrams.

Prime factor trees resource includes introduction to prime factor trees, 2 examples, 2 guided questions and 2 independent questions. Answers provided.

LCM and HCF resource includes 1 example, 2 guided questions, 2 independent questions and 1 challenge question. Answers provided.

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