1.   Find the GCF of 24 and 54.
    A. 6 B. 3
    C. 2 D. 12
    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 38 and 49.
    A. 1 B. 2
    C. 3 D. 4
    Hint

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

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