1.	Round 162 to the nearest ten.
		A.	170	B.	162
		C.	160	D.	165
		Hint
	2.	Estimate the product of 38 and 7.
		A.	400	B.	280
		C.	210	D.	200
		Hint
	3.	Round 3,120 to the nearest thousand.
		A.	4,000	B.	3,120
		C.	3,100	D.	3,000
		Hint
	4.	Round 485 to the nearest ten.
		A.	480	B.	500
		C.	490	D.	400
		Hint
	5.	Estimate the product of 3,191 and 19.
		A.	6,000	B.	4,000
		C.	50,000	D.	60,000
		Hint