1.	Estimate. Round to the tens place.
		A.	50 + 20 = 70	B.	30 + 20 = 50
		C.	20 + 10 = 30	D.	30 + 10 = 40
		Hint
	2.	Estimate. Round to the tens place.
		A.	$70 − $30 = $40	B.	$70 − $40 = $30
		C.	$80 − $30 = $50	D.	$100 − $30 = $70
		Hint
	3.	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 $10 more
		C.	about $5 more	D.	about $20 more
		Hint
	4.	Find the sum.
		A.	82	B.	81
		C.	71	D.	17
		Hint
	5.	Find $92 − $53.
		A.	$39	B.	$29
		C.	$49	D.	$145
		Hint