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Least common multiple (LCM)
Work out the LCM (least common multiple) of two numbers.
What is the least common multiple of 12 and 18?
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This exercise finds the least common multiple (LCM) of two numbers — the smallest number that both of them divide into exactly. You will use the LCM later as a common denominator when adding fractions with different denominators.
What does this generator do?
Picks two numbers from a friendly range (4 to 48). You look for the smallest number that both will divide into exactly.
How to use it
Easiest formula: LCM(a, b) = (a × b) / GCF(a, b). Or list multiples of the larger number until you find one the smaller number divides into.