1.	Find 25% of 20 mentally.
		A.	80	B.	4
		C.	10	D.	5
		Hint
	2.	Estimate 73% of 16.
		A.	14	B.	8
		C.	10	D.	12
		Hint
	3.	Estimate 60% of 92.
		A.	48	B.	54
		C.	42	D.	60
		Hint
	4.	Find 75% of 24 mentally.
		A.	22	B.	32
		C.	12	D.	18
		Hint
	5.	Find of 99 mentally.
		A.	11	B.	33
		C.	297	D.	9
		Hint