

1. 
Express 0.49% as a decimal. 


A. 
0.00049 
B. 
0.49 


C. 
0.0049 
D. 
0.049 


Hint 


2. 
Express .00034 as a percent. 


A. 
0.0034% 
B. 
3.4% 


C. 
0.34% 
D. 
0.034% 


Hint 


3. 
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. 
0.1868% 
B. 
0.2335% 


C. 
0.467% 
D. 
0.934% 


Hint 


4. 
The number of U.S. households with cable television increased 219% between 1981 and 2001. Write 219% as a decimal. 


A. 
2.19 
B. 
21,900 


C. 
21.9 
D. 
0.219 


Hint 


5. 
Find 0.008 written as a percent. 


A. 
0.8% 
B. 
8% 


C. 
80% 
D. 
0.08% 


Hint 


