1.	An example of the Commutative Property of Addition is ______________.
		A.	2(4 · 6) = (2 · 4)6
		B.	2 · 4 = 4 · 2
		C.	2 + (4 + 6) = (2 + 4) + 6
		D.	2 + 4 = 4 + 2
		Hint
	2.	Simplify 5 · x · 10.
		A.	50 + x	B.	15 + x
		C.	15x	D.	50x
		Hint
	3.	Name the property shown by the statement a + b + 0 = 0 + a + b.
		A.	Associative Property of Addition
		B.	Additive Identity
		C.	Commutative Property of Addition
		D.	None of these
		Hint
	4.	Simplify (r + 6) + 27.
		A.	33r	B.	6r + 27
		C.	r + 33	D.	r + 21
		Hint
	5.	Which is not a valid property?
		A.	All of these are valid.
		B.	Associative Property of Addition
		C.	Associative Property of Multiplication
		D.	Associative Property of Subtraction
		Hint