Greatest Common Factor (GCF) Worksheets

Find the greatest common factor of each pair. A new set of questions every time, with an answer key. Click New worksheet for a fresh sheet, then print it with its answer key.

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Greatest common factor (GCF)

Name Date

Find the greatest common factor of each pair.

1.GCF of 25 and 5:  

2.GCF of 35 and 42:  

3.GCF of 32 and 48:  

4.GCF of 33 and 11:  

5.GCF of 12 and 8:  

6.GCF of 9 and 54:  

7.GCF of 50 and 10:  

8.GCF of 24 and 18:  

9.GCF of 10 and 12:  

10.GCF of 6 and 12:  

11.GCF of 60 and 12:  

12.GCF of 50 and 30:  

13.GCF of 16 and 4:  

14.GCF of 36 and 24:  

15.GCF of 40 and 24:  

16.GCF of 20 and 60:  

17.GCF of 18 and 9:  

18.GCF of 5 and 25:  

19.GCF of 12 and 6:  

20.GCF of 40 and 8:  

21.GCF of 11 and 22:  

22.GCF of 9 and 36:  

23.GCF of 45 and 36:  

24.GCF of 24 and 36:  

About this worksheet

Upper-elementary and pre-algebra practice: order of operations, squares and cubes, adding, subtracting and multiplying negative numbers, one-step equations, factors, greatest common factor, least common multiple, prime numbers, mean, median and range, and number patterns. Each sheet is generated fresh with an answer key.

Tips for parents and teachers

Order of operations: brackets, then powers, then × and ÷ from left to right, then + and − from left to right.
Use a number line for negative numbers until the rules feel natural.
To solve an equation, do the opposite operation to both sides.
Check equation answers by putting the value back in.

Questions

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Which grade is this for?

This worksheet suits 5th grade. Use the options to change it or make it easier or harder.

About this worksheet

Tips for parents and teachers

Questions

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