1.	What number is approximately 40% of 685?
		A.	320	B.	350
		C.	280	D.	420
		Hint
	2.	Find 50% of 80 mentally.
		A.	40	B.	4
		C.	20	D.	160
		Hint
	3.	Find 25% of 20 mentally.
		A.	10	B.	80
		C.	5	D.	4
		Hint
	4.	Find 75% of 24 mentally.
		A.	32	B.	12
		C.	18	D.	22
		Hint
	5.	Find of 99 mentally.
		A.	11	B.	9
		C.	33	D.	297
		Hint