1.	Estimate. Round to the tens.
		A.	$70 − $30 = $40	B.	$100 − $30 = $70
		C.	$80 − $30 = $50	D.	$70 − $40 = $30
		Hint
	2.	Kayla wants to buy a DVD movie that costs $23 and a music CD that costs $18. She has $32. About how much more money does she need to buy the items?
		A.	about $30 more	B.	about $5 more
		C.	about $20 more	D.	about $10 more
		Hint
	3.	Solve.
		A.	95	B.	105
		C.	85	D.	39
		Hint
	4.	Solve.
		A.	$14	B.	$15
		C.	$16	D.	$33
		Hint
	5.	Find 51 − 23.
		A.	74	B.	18
		C.	28	D.	38
		Hint