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Definition of Multiples

Multiples, GCD and LCM — with examples and an interactive trainer.

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Multiples — the essentials

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Frequently asked questions

What is a multiple of a number?

A number b is a multiple of a if b is divisible by a with no remainder. For example, multiples of 4: 4, 8, 12, 16, 20...

How do you find the LCM of two numbers?

LCM(a,b) = a×b / GCD(a,b). For example: LCM(4,6) = 24/GCD(4,6) = 24/2 = 12.

Where is LCM used?

LCM is used when adding fractions with different denominators — to find a common denominator.