1.	1.Which fraction modeled below rounds to 1 when rounding to the nearest ?
		A.		B.
		C.		D.
		Hint
	2.	Estimate .
		A.	1	B.	2
		C.		D.
		Hint
	3.	Estimate .
		A.	2	B.	4
		C.	5	D.	3
		Hint
	4.	Round 3 to the nearest whole number.
		A.	3	B.	4
		C.	2	D.	0
		Hint
	5.	Estimate × 21.
		A.	11	B.	16
		C.	15	D.	28
		Hint