1.   Find the GCF of 24 and 54.
    A. 2 B. 6
    C. 12 D. 3
    Hint

  2.   Find the GCF of 16, 12, and 36.
    A. 4 B. 6
    C. 2 D. 3
    Hint

  3.   Which two numbers have a GCF of 9?
    A. 45, 95 B. 36, 39
    C. 36, 45 D. 18, 36
    Hint

  4.   Find the GCF of 32 and 42.
    A. 4 B. 3
    C. 14 D. 2
    Hint

  5.   Which two numbers have a GCF of 7?
    A. 7, 17 B. 25, 45
    C. 21, 63 D. 35, 126
    Hint