1.	Find 4 + (–5).
		A.	9	B.	1
		C.	–1	D.	–9
		Hint
	2.	Find –1 + 2.
		A.	1	B.	–1
		C.	–3	D.	3
		Hint
	3.	Find 6 + (–10).
		A.	4	B.	–4
		C.	16	D.	–16
		Hint
	4.	Find –5 + (–4).
		A.	1	B.	–9
		C.	9	D.	–1
		Hint
	5.	Choose the addition sentence that represents the model.
		A.	–5 + 1 = –4	B.	5 + (–1) = 4
		C.	6 + (–2) = 4	D.	–3 + (–1) = –4
		Hint