Greatest Common Factor
  • 1. What is the GCF of

    24, 16
A) 6
B) 2
C) 8
D) 4
  • 2. What is the GCF of

    70,49
A) 3
B) 7
C) 2
D) 10
  • 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) 9
C) 6
D) 7
  • 5. What is the GCF of

    56, 24
A) 3
B) 8
C) 11
D) 9
  • 6. What is the GCF of

    35, 25
A) 7
B) 3
C) 5
D) 6
  • 7. What is the GCF of

    24, 20
A) 6
B) 2
C) 4
D) 3
  • 8. What is the GCF of

    25, 35
A) 3
B) 4
C) 5
D) 7
  • 9. What is the GCF of

    54, 81
A) 3
B) 11
C) 9
D) 8
  • 10. What is the GCF of

    15,40
A) 1
B) 3
C) 5
D) 8
  • 11. What is the GCF of

    28, 63
A) 7
B) 2
C) 9
D) 3
  • 12. What is the GCF of

    36, 18
A) 9
B) 6
C) 3
  • 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) 3
B) 6
C) 2
D) 12
  • 15. What is the GCF of

    15, 10
A) 1
B) 5
C) 3
D) 2
  • 16. What is the GCF of

    12, 24
A) 3
B) 6
C) 12
D) 4
  • 17. What is the GCF of

    18, 14
A) 2
B) 3
C) 6
D) 7
  • 18. What is the GCF of

    60, 80
A) 20
B) 4
C) 2
D) 6
  • 19. What is the GCF of

    72, 90
A) 9
B) 6
C) 3
  • 20. What is the GCF of

    56, 49
A) 4
B) 2
C) 3
D) 7
  • 21. What is the GCF of

    15, 30
A) 10
B) 15
C) 5
D) 2
  • 22. What is the GCF of

    48, 30
A) 6
B) 8
C) 15
D) 12
  • 23. What is the GCF of

    35, 30
A) 2
B) 15
C) 5
D) 10
  • 24. What is the GCF of

    44, 99
A) 9
B) 4
C) 11
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