- 1. What is the GCF of 18 and 24?
A) 4 B) 9 C) 2 D) 6
- 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) 6 B) 2 C) 4 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) yes B) only on Fridays. C) no D) maybe
- 6. Are the numbers 50 and 65 relatively prime?
A) only on Fridays. B) maybe C) no D) yes
- 7. What is the GCF of 36x2 and 45x4?
A) 5x B) x2 C) 9x2 D) 3x2
- 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) 1, relatively prime B) 2 C) 3 D) 6
- 10. What does the C in GCF stand for?
A) Common B) Core C) Cut D) Cute
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