Factors, GCF and LCM Worksheet Generator
Mix and match factor lists, prime factorization, greatest common factor and least common multiple on one printable sheet — with a full answer key.
Factors, GCF & LCM
Name: Date:
- 1.LCM of 21 and 31:
- 2.LCM of 33 and 23:
- 3.GCF of 47 and 60:
- 4.LCM of 30 and 57:
- 5.LCM of 59 and 39:
- 6.GCF of 30 and 21:
- 7.LCM of 53 and 40:
- 8.LCM of 48 and 41:
- 9.GCF of 8 and 22:
- 10.GCF of 46 and 9:
- 11.GCF of 7 and 39:
- 12.LCM of 23 and 16:
- 13.GCF of 42 and 50:
- 14.GCF of 38 and 44:
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Factors, GCF & LCM
Name: Date:
- 15.LCM of 6 and 36:
- 16.LCM of 37 and 51:
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Factors, GCF & LCM — Answer Key
Name: Date:
- 1.LCM of 21 and 31:651
- 2.LCM of 33 and 23:759
- 3.GCF of 47 and 60:1
- 4.LCM of 30 and 57:570
- 5.LCM of 59 and 39:2301
- 6.GCF of 30 and 21:3
- 7.LCM of 53 and 40:2120
- 8.LCM of 48 and 41:1968
- 9.GCF of 8 and 22:2
- 10.GCF of 46 and 9:1
- 11.GCF of 7 and 39:1
- 12.LCM of 23 and 16:368
- 13.GCF of 42 and 50:2
- 14.GCF of 38 and 44:2
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Factors, GCF & LCM — Answer Key
Name: Date:
- 15.LCM of 6 and 36:36
- 16.LCM of 37 and 51:1887
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Frequently asked questions
- How is prime factorization written?
- As a product of primes in ascending order, for example 60 = 2 × 2 × 3 × 5.
- Can I focus on just GCF?
- Yes — untick the other problem types and the whole sheet will be greatest common factor practice.