1.	What is the least common multiple of 4, 5, and 16?
		A.	80	B.	64
		C.	160	D.	16
		Hint
	2.	Find the sum (-4) + 6.
		A.	2	B.	-10
		C.	-2	D.	10
		Hint
	3.	Find the difference of (-2) and 5.
		A.	3	B.	7
		C.	-3	D.	-7
		Hint
	4.	Find the solution for 12r = -132.
		A.	-144	B.	-120
		C.	-12	D.	-11
		Hint
	5.	Find the least common multiple of 15 and 6.
		A.	30	B.	60
		C.	45	D.	15
		Hint
	6.	Find 6 + (–10).
		A.	–16	B.	16
		C.	–4	D.	4
		Hint
	7.	Find the sum 16 + (-3).
		A.	19	B.	-19
		C.	13	D.	-13
		Hint
	8.	Find the product 3(-12).
		A.	-36	B.	36
		C.	9	D.	-9
		Hint
	9.	Multiply –8(-4).
		A.	32	B.	-12
		C.	12	D.	-32
		Hint
	10.	Find the LCM of 25 and 30.
		A.	275	B.	120
		C.	150	D.	750
		Hint