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

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

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

  4.   Find the GCF of 33, 48, and 54.
    A. 8 B. 2
    C. 1 D. 3
    Hint

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