1.	Use estimation to place the decimal point in the product 18.7 × 21 = 3927.
		A.	3927.0	B.	392.7
		C.	39.27	D.	3.927
		Hint
	2.
		A.	15	B.	1.5
		C.	0.15	D.	150
		Hint
	3.	A dollar bill is 6.125 inches long. Caitlin used it as a measuring device and found that her shelf was 5 times the length of the dollar bill. How long is her shelf?
		A.	306.05 in.	B.	30.605 in.
		C.	306.25 in.	D.	30.625 in.
		Hint
	4.	Write 7.2 × 106 in standard form.
		A.	720,000	B.	7,200,000
		C.	72,000,000	D.	0.0000072
		Hint
	5.	Write 1.85 × 102 in standard form.
		A.	185	B.	1,850
		C.	0.185	D.	1.85
		Hint