- 1. What is the GCF of 18 and 24?
A) 4
B) 6
C) 9
D) 2
- 2. What is the GCF of 27 and 45?
A) 5
B) 3
C) 9
D) 2
- 3. What is the GCF of 12, 14 and 20?
A) 4
B) 6
C) 2
D) 8
- 4. Are the numbers 9 and 36 relatively prime?
A) only on Fridays.
B) yes
C) maybe
D) no
- 5. Are the numbers 37 and 42 relatively prime?
A) no
B) yes
C) maybe
D) only on Fridays.
- 6. Are the numbers 50 and 65 relatively prime?
A) only on Fridays.
B) yes
C) maybe
D) no
- 7. What is the GCF of 36x2 and 45x4?
A) 3x2
B) 9x2
C) 5x
D) x2
- 8. What is the GCF of 16x2y and 15y3z?
A) 3y
B) y
C) 3
D) z
- 9. What is the GCF of 2, 6, and 9?
A) 2
B) 3
C) 6
D) 1, relatively prime
- 10. What does the C in GCF stand for?
A) Cute
B) Cut
C) Common
D) Core
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