1.	Estimate 25.412 - 6.93 by rounding.
		A.	17	B.	19
		C.	20	D.	18
		Hint
	2.	Find the least common denominator for and
		A.	10	B.	5
		C.	50	D.	15
		Hint
	3.	What is the least common denominator for and
		A.	12	B.	36
		C.	72	D.	9
		Hint
	4.	Express in simplest form.
		A.		B.
		C.		D.
		Hint
	5.	Estimate 78.3 + 23.1 by rounding.
		A.	80	B.	100
		C.	101.4	D.	90
		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.	14
		C.	24	D.	112
		Hint
	8.	Estimate 6.8 - 2.5 by rounding.
		A.	14	B.	4
		C.	10	D.	0.4
		Hint
	9.	Write as a mixed number.
		A.		B.
		C.		D.
		Hint
	10.	Write as a mixed number.
		A.		B.
		C.		D.
		Hint