Fractions, Decimals and Percents How to change from one to the other....

Memorize these equivalent fractions.

Changing from a fraction to a decimal to a percent.

• To change from a percent to a decimal, divide the percent by 100. The easiet way to do this is to move the decimal point left 2 places.
  
  1. Write the percentage without the percent sign
     
     25
  2. place a decimal at the end if not already included
     
     25.
  3. move the decimal two places LEFT
     
     .25
• To change a terminating decimal to a fraction:
  1. SAY the proper name of the decimal: e.g. .25 is twenty-five hundredths
  2. WRITE this number as a fraction: 25/100
  3. Reduce: 25/100 = 1/4
  OR
  1. draw a line under the decimal: .25
  2. or place a "1" unde the decimal point and a zero under the remaining numerals
     

     .25

     100

  3. Remove the decimal point and reduce the fraction:

     25 = 1

     100 = 4

• To change a repeating decimal to a fraction:
  
  
  

Jeff LeMieux /c/2002