1.	Find the common factors of 8 and 12.
		A.	4, 6, 24	B.	1, 2, 4
		C.	1, 2, 4, 8	D.	1, 2, 3, 6
		Hint
	2.	Find the common factors of 10, 20, and 40.
		A.	1, 2, 5, 10, 20, 40	B.	1, 2, 5, 10, 20
		C.	1, 2, 5, 8, 10	D.	1, 2, 5, 10
		Hint
	3.	Find the GCF of 20 and 25.
		A.	10	B.	1
		C.	5	D.	20
		Hint
	4.	Find the GCF of 18, 27, and 36.
		A.	6	B.	12
		C.	3	D.	9
		Hint
	5.	Find the GCF of 10, 30, and 40.
		A.	2	B.	4
		C.	10	D.	15
		Hint