Section 1

Refresher

 

If you don’t know the answers for Are You Ready?, or require more information, study the following information about percentages.

 

This data clarifies why changing a percent to a decimal numeral means moving the decimal in the percent two places to the left.

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The following clarifies why changing a decimal to a percent means moving the decimal point two places to the right.

2. Use proportional reasoning. Let the required percentage be n%.
   
   
   1. 
      
      So, 0.25 = 25%
      
      
   2. 
      
      So, 3.2 = 320%
      
      
   3. 
      
      So, 0.001=0.1%
      
      

Go back to Are You Ready? and try the questions again. Contact your teacher if you continue to have difficulty.