1.	What number is approximately 40% of 685?
		A.	320	B.	280
		C.	350	D.	420
		Hint
	2.	Find 25% of 20 mentally.
		A.	80	B.	10
		C.	4	D.	5
		Hint
	3.	Estimate 60% of 92.
		A.	54	B.	42
		C.	48	D.	60
		Hint
	4.	Find of 99 mentally.
		A.	11	B.	33
		C.	9	D.	297
		Hint
	5.	Estimate 11% of 60.
		A.	10	B.	600
		C.	3	D.	6
		Hint