Greatest Common Factor
Contributed by: Crandall

  • 1. What is the GCF of 24, 16
A) 2
B) 8
C) 4
D) 6
  • 2. What is the GCF of 70,49
A) 3
B) 7
C) 10
D) 2
  • 3. What is the GCF of 44, 11
A) 2
B) 4
C) 11
  • 4. What is the GCF of 21, 49
A) 3
B) 6
C) 9
D) 7
  • 5. What is the GCF of 56, 24
A) 11
B) 3
C) 8
D) 9
  • 6. What is the GCF of 35, 25
A) 3
B) 7
C) 6
D) 5
  • 7. What is the GCF of 24, 20
A) 3
B) 4
C) 2
D) 6
  • 8. What is the GCF of 25, 35
A) 4
B) 3
C) 7
D) 5
  • 9. What is the GCF of 54, 81
A) 3
B) 11
C) 8
D) 9
  • 10. What is the GCF of 15,40
A) 1
B) 8
C) 5
D) 3
  • 11. What is the GCF of 28, 63
A) 2
B) 7
C) 3
D) 9
  • 12. What is the GCF of 36, 18
A) 3
B) 9
C) 6
  • 13. What is the GCF of 30, 60
A) 15
B) 2
C) 5
D) 30
  • 14. What is the GCF of 24, 60
A) 12
B) 3
C) 2
D) 6
  • 15. What is the GCF of 15, 10
A) 5
B) 2
C) 1
D) 3
  • 16. What is the GCF of 12, 24
A) 3
B) 4
C) 6
D) 12
  • 17. What is the GCF of 18, 14
A) 3
B) 7
C) 6
D) 2
  • 18. What is the GCF of 60, 80
A) 20
B) 6
C) 2
D) 4
  • 19. What is the GCF of 72, 90
A) 3
B) 6
C) 9
  • 20. What is the GCF of 56, 49
A) 3
B) 2
C) 7
D) 4
  • 21. What is the GCF of 15, 30
A) 5
B) 10
C) 2
D) 15
  • 22. What is the GCF of 48, 30
A) 12
B) 8
C) 15
D) 6
  • 23. What is the GCF of 35, 30
A) 15
B) 10
C) 5
D) 2
  • 24. What is the GCF of 44, 99
A) 9
B) 11
C) 4
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Answer Key

1.B   2.B   3.C   4.D   5.C   6.D   7.B   8.D   9.D   10.C   11.B   12.B   13.D   14.D   15.A   16.D   17.D   18.A   19.C   20.C   21.D   22.D   23.C   24.B  

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