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