GCF & LCM worksheets
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The GCF is the biggest number that divides into both numbers, and the LCM is the smallest number they both divide into.
Just 6th grade. Print it here, or open the page for examples and teaching notes.
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6th grade Core grade
Each print is a different sheet with its own answer key. You don't need to sign up.
GCF and LCM worksheets give your child practice finding the greatest common factor of pairs up to 100 and the least common multiple of pairs up to 12, the skill 6th grade uses to factor expressions and add unlike fractions.
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