1.	Which operation should be done first when evaluating 15 - 5 ÷ 3 + 2 - 1?
		A.	multiplication	B.	subtraction
		C.	division	D.	addition
		Hint
	2.	Evaluate 5 + 6 - 2 + 4.
		A.	13	B.	7
		C.	17	D.	5
		Hint
	3.	Evaluate 42 - 10
		A.	6	B.	2
		C.	26	D.	16
		Hint
	4.	Multiply 45.3 × 102.
		A.	453	B.	4,530
		C.	4.53	D.	0.453
		Hint
	5.	Evaluate 16 + (9 - 4)10 - 4 · 5.
		A.	96	B.	35
		C.	46	D.	190
		Hint