Arithmetic Grade Four

Lesson Ninety-five: Parts of Wholes

Finding fractional parts of wholes is fairly easy. The following example shows how to find one-third of fifteen. 


  PROBLEM:  

          1/3 of 15 = 

 1. DIVIDE THE WHOLE NUMBER BY THE DENOMINATOR IN THE FRACTION
 2. MULTIPLY THIS QUOTIENT BY THE NUMERATOR.

          15/3  = 5
          5 x 1 = 5

Here's another example: 

  PROBLEM:  

          1/4 of 20 =

  1. DIVIDE THE WHOLE NUMBER BY THE DENOMINATOR IN THE FRACTION:
  
          20 / 4 = 5

  2. MULTIPLY THIS QUOTIENT BY THE NUMERATOR:

         5 x 1 = 5
In the next group of problems you will solve several of these problems.

Now you get to try a few for yourself.

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