1.	Solve x + 4 = 7.
		A.	–11	B.	–3
		C.	11	D.	3
		Hint
	2.	Solve m + 2 = 7.
		A.	9	B.	–9
		C.	5	D.	–5
		Hint
	3.	Solve m + 2 = 7.
		A.	–9	B.	–5
		C.	9	D.	5
		Hint
	4.	Decide which addition equation the model represents. Then solve the equation.
		A.	x + 1 = 5; x = 4
		B.	x + 5 = 1; x = 6
		C.	x + 1 = 5; x = 6
		D.	x + 5 = 1; x = –4
		Hint
	5.	Decide which addition equation the model represents. Then solve the equation.
		A.	y + 2 = –7; y = –9
		B.	y + 2 = –7; y = –5
		C.	y – 7 = 2; y = –5
		D.	y – 7 = 2; y = 9
		Hint