1.   What is the greatest common factor of 22, 66, and 110?
    A. 66 B. 11
    C. 2 D. 22
    Hint

  2.   George wants to resurface the table below with ceramic tiles. What is the largest square tile that he can use without having to cut any tiles?
   
    A. 6 inches on each side B. 12 inches on each side
    C. 8 inches on each side D. 4 inches on each side
    Hint

  3.   What is the greatest common factor of 64 and 40?
    A. 4 B. 20
    C. 8 D. 2
    Hint

  4.   What is the greatest common factor of 39 and 18?
    A. 6 B. 9
    C. 3 D. 13
    Hint

  5.   What is the greatest common factor of 36, 54, and 90.
    A. 9 B. 18
    C. 36 D. 6
    Hint



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