Foundation
NumberWorksheet · Foundation
HCF and LCM:The ladder method
Side by side, divide by a prime that is a factor of both until none is, then down the side for the HCF and round the L for the LCM. Two to a page, to stick in books.
A free key stage 3 and GCSE Foundation number walkthrough, spec code N4. It goes with the lesson on HCF and LCM: the ladder method.
Lesson
HCF and LCM:The ladder method
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