1.   What is the greatest common factor of 16x2 and 12x?
    A. 4x B. 16x2
    C. 12x D. 4x2
    Hint

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

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

  4.   What is the greatest common factor of 14p2q and 42p3q2?
    A. 14p2q B. 7p2q2
    C. 14pq D. 7pq
    Hint

  5.   Janice has three pieces of string that are 36 cm, 24 cm, and 18 cm in length. She needs to have strings that are all the same length, but she does not want to waste any string. What is the greatest length Janice can cut each piece of string into and still have equal lengths?
    A. 12 cm B. 9 cm
    C. 6 cm D. 3 cm
    Hint



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