GCF, LCM, Prime Factorization
  • 1. What is the GCF of 8, 12, and 30?
A) 1
B) 2
C) 4
D) 6
  • 2. What is the GCF of 18 and 72?
A) 72
B) 1
C) 2
D) 18
  • 3. What is the GCF of 20 and 320?
A) 20
B) 1
C) 10
D) 5
  • 4. What is the GCF of 4, 5, and 9?
A) 1
B) 2
C) 180
D) 9
  • 5. What is the LCM of 7 and 11?
A) 11
B) 18
C) 7
D) 77
  • 6. What is the LCM of 8 and 24?
A) 24
B) 8
C) 172
D) 48
  • 7. What is the LCM of 2, 4, and 10?
A) 160
B) 40
C) 80
D) 20
  • 8. What is the LCM of 6, 9, and 12?
A) 3
B) 36
C) 54
D) 72
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