
	1.	Find the difference.
		A.	8	B.	21
		C.	13	D.	5
		Hint

	2.	Find the difference.
		A.	9	B.	10
		C.	8	D.	7
		Hint

	3.	Find the difference.
		A.	30	B.	50
		C.	5	D.	40
		Hint

	4.	Find the difference.
		A.	30	B.	72
		C.	3	D.	31
		Hint

	5.	Round 74 to the nearest ten.
		A.	80	B.	60
		C.	75	D.	70
		Hint

	6.	Round 48 to the nearest ten.
		A.	45	B.	58
		C.	50	D.	40
		Hint

	7.	Round 95 to the nearest ten.
		A.	10	B.	100
		C.	90	D.	95
		Hint

	8.	Round 738 to the nearest hundred.
		A.	740	B.	730
		C.	700	D.	800
		Hint

	9.	Estimate. 91 − 23 = ___
		A.	50	B.	60
		C.	80	D.	70
		Hint

	10.	Estimate. 85 − 69 = ___
		A.	40	B.	30
		C.	10	D.	20
		Hint