1.	An example of the Commutative Property of Addition is ______________.
		A.	2 · 4 = 4 · 2
		B.	2(4 · 6) = (2 · 4)6
		C.	2 + (4 + 6) = (2 + 4) + 6
		D.	2 + 4 = 4 + 2
		Hint
	2.	Simplify 6 + b + 3.
		A.	b + 9	B.	3 + b
		C.	9b	D.	9
		Hint
	3.	Find 50 · (13 · 2) mentally.
		A.	1200	B.	750
		C.	130	D.	1300
		Hint
	4.	Name the property shown by the statement a + b + 0 = 0 + a + b.
		A.	Commutative Property of Addition
		B.	Additive Identity
		C.	Associative Property of Addition
		D.	None of these
		Hint
	5.	Simplify (r + 6) + 27.
		A.	r + 21	B.	6r + 27
		C.	r + 33	D.	33r
		Hint