1.	Solve x + 4 = 7.
		A.	3	B.	11
		C.	–3	D.	–11
		Hint
	2.	Solve z + 6 = 3.
		A.	3	B.	–9
		C.	9	D.	–3
		Hint
	3.	Solve a + 6 = –2.
		A.	–8	B.	8
		C.	–4	D.	4
		Hint
	4.	Solve –2 + d = –4.
		A.	6	B.	2
		C.	–6	D.	–2
		Hint
	5.	Decide which addition equation the model represents. Then solve the equation.
		A.	x + 5 = 1; x = –4
		B.	x + 5 = 1; x = 6
		C.	x + 1 = 5; x = 6
		D.	x + 1 = 5; x = 4
		Hint