GCF and LCM Worksheets

These math worksheets cover factoring to prime numbers as well as finding the greatest common factor ( GCF ) or least common multiple ( LCM ) of two numbers.

Prime Factors

Greatest common factors

Least common multiples

Sample Grade 6 Factoring Worksheet

More factoring & prime factors worksheets

Explore all of our factoring worksheets, from factoring numbers under 50 to prime factor trees, GCFs and LCMs.

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