1.	Subtract 6 – 12.
		A.	18	B.	6
		C.	-6	D.	-18
		Hint
	2.	Find the difference –5 – (-11).
		A.	16	B.	-16
		C.	6	D.	-6
		Hint
	3.	Evaluate q – r if q = -13 and r = -2.
		A.	-11	B.	15
		C.	-15	D.	11
		Hint
	4.	Evaluate r – s – t if r = -5, s = -10, and t = -15.
		A.	-10	B.	0
		C.	20	D.	-30
		Hint
	5.	A submarine started at a depth of 150 feet below sea level and descended 355 feet. What is the new depth of the submarine?
		A.	0 feet	B.	370 feet
		C.	205 feet	D.	505 feet
		Hint