1.	Round 37.507 to the nearest whole number.
		A.	37.51	B.	37.5
		C.	38	D.	37
		Hint
	2.	What is rounded to the nearest half unit?
		A.		B.
		C.	1	D.
		Hint
	3.	Estimate the sum of 32.56 and 53.47.
		A.	85	B.	87
		C.	86	D.	84
		Hint
	4.	Use rounding to estimate 12 + 7
		A.	18	B.	19
		C.	21	D.	20
		Hint
	5.	Estimate the difference 5.6 - 7.3.
		A.	2	B.	-1
		C.	1	D.	-2
		Hint