1.	Estimate 25.412 - 6.93 by rounding.
		A.	20	B.	17
		C.	18	D.	19
		Hint
	2.	Find the least common denominator for and
		A.	50	B.	5
		C.	15	D.	10
		Hint
	3.	What is the least common denominator for and
		A.	72	B.	9
		C.	36	D.	12
		Hint
	4.	Estimate 78.3 + 23.1 by rounding.
		A.	101.4	B.	90
		C.	100	D.	80
		Hint
	5.	Express in simplest form.
		A.		B.
		C.		D.
		Hint
	6.	Find the least common denominator for and .
		A.	56	B.	24
		C.	14	D.	112
		Hint
	7.	Estimate 5.21 - 1.9 by rounding.
		A.	10	B.	13
		C.	6	D.	3
		Hint
	8.	Estimate 6.8 - 2.5 by rounding.
		A.	14	B.	0.4
		C.	4	D.	10
		Hint
	9.	Write as a mixed number.
		A.		B.
		C.		D.
		Hint
	10.	Write as a mixed number.
		A.		B.
		C.		D.
		Hint