1.	Estimate 25.412 - 6.93 by rounding.
		A.	17	B.	19
		C.	20	D.	18
		Hint
	2.	Which fraction is when written in simplest form?
		A.		B.
		C.		D.
		Hint
	3.	What is the least common denominator for and
		A.	12	B.	9
		C.	36	D.	72
		Hint
	4.	Express in simplest form.
		A.		B.
		C.		D.
		Hint
	5.	Estimate 78.3 + 23.1 by rounding.
		A.	100	B.	101.4
		C.	90	D.	80
		Hint
	6.	Express in simplest form.
		A.		B.
		C.		D.
		Hint
	7.	Find the least common denominator for and .
		A.	14	B.	112
		C.	56	D.	24
		Hint
	8.	Estimate 5.21 - 1.9 by rounding.
		A.	13	B.	10
		C.	6	D.	3
		Hint
	9.	Estimate 6.8 - 2.5 by rounding.
		A.	4	B.	0.4
		C.	14	D.	10
		Hint
	10.	Write as a mixed number.
		A.		B.
		C.		D.
		Hint