1.	Find 4 + (–5).
		A.	–1	B.	9
		C.	1	D.	–9
		Hint
	2.	Find 2 – (–5).
		A.	–3	B.	–7
		C.	7	D.	3
		Hint
	3.	Find –4 – 6.
		A.	–10	B.	–2
		C.	10	D.	2
		Hint
	4.	Find –2 – (–7).
		A.	5	B.	–9
		C.	–5	D.	9
		Hint
	5.	The formula for converting Celsius temperatures (C) to Kelvin (K) temperatures is K = C + 273. Find the Kelvin scale temperature of –98°C.
		A.	–371 K	B.	–175 K
		C.	371 K	D.	175 K
		Hint