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.	6	D.	2
		Hint
	2.	Find the GCF of 28 and 34.
		A.	2	B.	7
		C.	4	D.	1
		Hint
	3.	Which two numbers have a GCF of 9?
		A.	18, 36	B.	45, 95
		C.	36, 45	D.	36, 39
		Hint
	4.	Find the GCF of 32 and 42.
		A.	4	B.	14
		C.	3	D.	2
		Hint
	5.	Which two numbers have a GCF of 7?
		A.	25, 45	B.	21, 63
		C.	7, 17	D.	35, 126
		Hint