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