Factors and Common Factors
  • 1. The factors of 12 are:
A) 1, 2, 3, 4, 5, 6, 12
B) 1, 2, 3, 4, 6, 12
C) 1, 2, 3
D) 4, 6, 12
  • 2. The factors of 15 are:
A) 1, 2, 3, 5, 15
B) 1, 3, 5, 15
C) 1, 15
D) 3, 5
  • 3. The common factors of 12 and 15 are:
A) 1, 3
B) 1
C) 1, 3, 5, 15
D) 1, 2, 3, 4, 6, 12
  • 4. The factors of 20 are:
A) 1, 20
B) 1, 2, 4, 5, 10, 20
C) 2, 10, 5, 4, 3, 16
D) 5, 4
  • 5. The factors of 25 are:
A) 1, 5, 25
B) 1, 2, 5, 10, 25
C) 1, 25
D) 5, 5
  • 6. The common factors of 20 and 25 are:
A) 1, 4, 5, 20
B) 1, 5, 20
C) 1
D) 1, 5
  • 7. The common factors of 4 and 12 are:
A) 1, 2, 3, 4, 6, 12
B) 1, 4, 12
C) 1, 2, 4
D) 1, 2, 4, 6
  • 8. The factors of 6 are:
A) 1, 2, 3, 4, 5, 6
B) 2, 3
C) 1, 6
D) 1, 2, 3, 6
  • 9. The factors of 18 are:
A) 3, 6
B) 1, 2, 3, 6, 18
C) 2, 9
D) 1, 2, 3, 6, 9, 18
  • 10. The common factors of 6 and 18 are:
A) 1, 2, 3, 6
B) 1, 2, 3, 6, 9, 18
C) 3, 6
D) 1, 2, 3, 6, 9
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