1.	Find the greatest common factor of 4, 8, and 32.
		A.	8	B.	4
		C.	1	D.	2
		Hint
	2.	Find the GCF of 22 ·  3 ·  52 and 2 ·  32 ·  53.
		A.	2 ·  3 ·  52	B.	2 ·  3 ·  53
		C.	22 ·  3 ·  52	D.	2 ·  32 ·  53
		Hint
	3.	Find the greatest common factor of 20, 24, and 36.
		A.	3	B.	4
		C.	2	D.	1
		Hint
	4.	Carlos's rectangular bathroom floor measures 108 in by 144 in. He would like to place square tiles on his bathroom floor. What is the largest square tile that Carlos can use to cover the floor without cutting any tiles?
		A.	36 in by 36 in	B.	12 in by 12 in
		C.	40 in by 40 in	D.	9 in by 9 in
		Hint
	5.	Find the GCF of 144 and 180.
		A.	6	B.	12
		C.	9	D.	36
		Hint