Prime Factors, Highest Common Factor & Lowest Common Multiple
This worksheet focuses on the three inter-related topics of prime factors, highest common factors and lowest common multiples. Questions include finding the prime factors of numbers using the ladder method and the tree method. It also asks you (or your child or student) to find the highest common factor of two numbers, and of three numbers. Finally it has questions asking to find the lowest common multiple of two numbers and of three numbers. The memo is worked out step by step so that you can understand where mistakes are made.   Remember - highest common factor is the same as greatest common factor. 

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Prime Factors, Highest Common Factors and Lowest Common Multiples Prime Factors, Highest Common Factors and Lowest common Multiples - Memo. 

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