1.	What number is approximately 40% of 685?
		A.	350	B.	280
		C.	420	D.	320
		Hint
	2.	Find 25% of 20 mentally.
		A.	5	B.	80
		C.	10	D.	4
		Hint
	3.	Estimate 73% of 16.
		A.	14	B.	12
		C.	10	D.	8
		Hint
	4.	Estimate 60% of 92.
		A.	42	B.	48
		C.	54	D.	60
		Hint
	5.	Find of 99 mentally.
		A.	297	B.	9
		C.	33	D.	11
		Hint