1.	What is the greatest common factor of 64 and 40?
		A.	8	B.	2
		C.	4	D.	20
		Hint
	2.	What is the greatest common factor of 39 and 18?
		A.	6	B.	9
		C.	3	D.	13
		Hint
	3.	Use a calculator to find × 7. Round to the nearest tenth.
		A.	20.9	B.	21
		C.	21.5	D.	22
		Hint
	4.	Use a calculator to find 6 × . Round to the nearest tenth.
		A.	19.8	B.	16.9
		C.	17.9	D.	18.8
		Hint
	5.	Use a calculator to find 3 × × 4. Round to the nearest tenth.
		A.	37	B.	37.7
		C.	38	D.	37.8
		Hint
	6.	Write as an improper fraction.
		A.		B.
		C.		D.
		Hint
	7.	Write as an improper fraction.
		A.		B.
		C.		D.
		Hint
	8.	Write as an improper fraction.
		A.		B.
		C.		D.
		Hint
	9.	Which is the best estimate of ?
		A.	2	B.	0
		C.		D.	1
		Hint
	10.	Which is the best estimate of ?
		A.	6	B.
		C.	1	D.	0
		Hint