1.	What number is approximately 40% of 685?
		A.	280	B.	320
		C.	420	D.	350
		Hint
	2.	Find 25% of 20 mentally.
		A.	10	B.	80
		C.	4	D.	5
		Hint
	3.	Estimate 73% of 16.
		A.	12	B.	8
		C.	10	D.	14
		Hint
	4.	Find of 99 mentally.
		A.	33	B.	297
		C.	11	D.	9
		Hint
	5.	Estimate 11% of 60.
		A.	3	B.	10
		C.	6	D.	600
		Hint