1.	Estimate 25.412 - 6.93 by rounding.
		A.	20	B.	17
		C.	19	D.	18
		Hint
	2.	Find the least common denominator for and
		A.	15	B.	50
		C.	5	D.	10
		Hint
	3.	Express in simplest form.
		A.		B.
		C.		D.
		Hint
	4.	Estimate 78.3 + 23.1 by rounding.
		A.	80	B.	100
		C.	90	D.	101.4
		Hint
	5.	Express in simplest form.
		A.		B.
		C.		D.
		Hint
	6.	Which fraction is when written in simplest form?
		A.		B.
		C.		D.
		Hint
	7.	Find the least common denominator for and .
		A.	56	B.	24
		C.	14	D.	112
		Hint
	8.	Estimate 5.21 - 1.9 by rounding.
		A.	3	B.	13
		C.	10	D.	6
		Hint
	9.	Estimate 6.8 - 2.5 by rounding.
		A.	14	B.	4
		C.	0.4	D.	10
		Hint
	10.	Write as a mixed number.
		A.		B.
		C.		D.
		Hint