What is a Common Multiple and Least Common Multiple?

Curated and Reviewed by Lesson Planet

A common multiple is exactly what it says it is: a multiple that two or more numbers have in common. So then a least common multiple would be the smallest common multiple that two or more numbers have in common. Watch this video to see how the instructor identifies common multiples of two different numbers.

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Concepts

common multiples, least common denominator, least common multiple, multiples