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Find LCM of three numbers

Find lowest common multiple of three numbers

This math skill teaches how to find the lowest common multiple (LCM) of three numbers. It involves factoring each number, identifying all distinct factors from the set, and then multiplying these factors to calculate the LCM. Shared factors are counted only once.

Learn find LCM of three numbers

Teaching Transcript

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Let's find the lowest common multiple of these 3 numbers

First we factor all the numbers.

To find the lowest common multiple, we need the set of all distinct factors. Shared factors are only counted once.

We can then multiply these distinct factors to find an LCM of 126

Skill Practice

Find lowest common multiple of three numbers

Test your understanding of find LCM of three numbers by practicing it! Work through the below exercises to use it in practice.