1.	Look at the factors of 18 and 30. What is the greatest common factor? factors of 18: 1, 2, 3, 6, 9, 18 factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
		A.	3	B.	5
		C.	2	D.	6
		Hint
	2.	Find the GCF of 24 and 54.
		A.	3	B.	2
		C.	6	D.	12
		Hint
	3.	Find the GCF of 16, 12, and 36.
		A.	6	B.	2
		C.	3	D.	4
		Hint
	4.	Which two numbers have a GCF of 9?
		A.	45, 95	B.	36, 45
		C.	36, 39	D.	18, 36
		Hint
	5.	Find the GCF of 38 and 49.
		A.	4	B.	1
		C.	2	D.	3
		Hint