1.	Determine which equation is true by replacing the variable with 4.
		A.	5 + x = 4	B.	5 + x = 10
		C.	5 + x = 5	D.	5 + x = 9
		Hint
	2.	Solve 16 = k + 10 using mental math.
		A.	8	B.	10
		C.	6	D.	9
		Hint
	3.	Identify the solution of 84 ÷ r = 12.
		A.	72	B.	21
		C.	7	D.	6
		Hint
	4.	For which equation is 11 the solution?
		A.	h – 5 = 11	B.	29 – h = 18
		C.	15 – h = 26	D.	11 = h + 7
		Hint
	5.	Solve 3 = 9 – n using mental math.
		A.	7	B.	6
		C.	9	D.	3
		Hint