1.	Express 830% as a decimal.
		A.	8.3	B.	0.83
		C.	83.0	D.	0.083
		Hint
	2.	Express 0.07% as a decimal.
		A.	0.7	B.	0.0007
		C.	7.0	D.	0.007
		Hint
	3.	Express 0.49% as a decimal.
		A.	0.49	B.	0.0049
		C.	0.00049	D.	0.049
		Hint
	4.	In a sample of air containing about 500 liters, 4.67 liters of the element Argon was found. What percentage of the air is Argon?
		A.	0.467%	B.	0.2335%
		C.	0.1868%	D.	0.934%
		Hint
	5.	Find 0.008 written as a percent.
		A.	0.8%	B.	0.08%
		C.	80%	D.	8%
		Hint