SME
Grade 6 Math · Problem type
GCF or LCM?
Use this for “Does the problem need the GCF or the LCM?”
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Which do you need?
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Assumptions
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The GCF splits things into equal groups with nothing left over.
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The LCM finds when two repeating things happen together again.
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Ask: am I splitting into groups, or waiting for things to line up?
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Related lessons
Greatest common factor and least common multiple
Main lesson
Least common multiple
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