Grade 4 GCF & LCM Worksheet (Set A)
Free printable Grade 4 gcf & lcm worksheet with an answer key, greatest common factor and lowest common multiple. Print as a PDF for the classroom or home.
How to teach greatest common factor and lowest common multiple teaching guide, with a worked explanation.
GCF & LCM
Find the greatest common factor or lowest common multiple.
- 1.Find the GCF of 12 and 8:
- 2.Find the GCF of 4 and 12:
- 3.Find the LCM of 6 and 2:
- 4.Find the GCF of 6 and 7:
- 5.Find the LCM of 5 and 10:
- 6.Find the GCF of 12 and 8:
- 7.Find the GCF of 10 and 12:
- 8.Find the GCF of 7 and 12:
- 9.Find the LCM of 10 and 5:
- 10.Find the GCF of 8 and 10:
- 11.Find the GCF of 9 and 10:
- 12.Find the GCF of 6 and 5:
- 13.Find the LCM of 12 and 4:
- 14.Find the GCF of 10 and 10:
- 15.Find the GCF of 9 and 6:
- 16.Find the LCM of 4 and 8:
- 17.Find the GCF of 3 and 10:
- 18.Find the LCM of 9 and 3:
- 19.Find the LCM of 5 and 3:
- 20.Find the GCF of 10 and 6:
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The greatest common factor is the largest factor two numbers share; the lowest common multiple is the smallest multiple they share.
In class: List factors (for the highest common factor) or multiples (for the lowest common multiple) of each number and find the shared one. Later use prime factors.
This Grade 4 gcf & lcm set is free to print or save as a PDF, and its answer key is computed in code, so it is never wrong.