1.   Find the greatest common factor of 168 and 288.
    A. 48 B. 24
    C. 36 D. 2
    Hint
  2.   What is the greatest common factor of 45, 75, and 135?
    A. 25 B. 15
    C. 9 D. 5
    Hint
  3.   What is the greatest common factor of 18mn2, 54m4, and 80n3?
    A. 18m2n3 B. 2mn2
    C. 2 D. 9mn
    Hint
  4.   Find the GCF of 16a3b2 and 12a2b.
    A. 4a2b B. 4ab
    C. 2a2b D. 2ab
    Hint
  5.   Find the GCF of 17r4s4 and 23rs4.
    A. rs B. 17rs4
    C. rs4 D. r4s4
    Hint

Glencoe
The McGraw-Hill Companies