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

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

  3.   Find the GCF of 38 and 49.
    A. 2 B. 4
    C. 3 D. 1
    Hint

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

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