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Lowest Common Multiple (LCM) & Highest Common Factor (HCF)

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Videos to help GCSE Maths students learn how to find the highest common factor (HCF) and lowest common multiple (LCM).

How to work out HCF and LCM using short division or ladder method?

How to work out the Highest Common Factor and Lowest Common Multiple using short division. Useful for quick calculations where a factor tree isn't required. GCSE level C
How to find HCF and LCM using the ladder method
This video will teach you how to find the highest common factor (HCF) and lowest common multiple (LCM) for 2 numbers.

Finding the LCM using the "Ladder" Method
Finding the GCF using the "Ladder" Method

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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