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