Arithmetic Grade Four

Lesson Ninety-six: Parts of Wholes

In the last lesson we found fractional parts of wholes, but our fractions always had one as the numerator. We will try finding fractional parts of wholes now with numerators other than ones! 


  PROBLEM:  

          2/3 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 2 = 10

Here's another example: 

  PROBLEM:  

          3/4 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 3 = 15
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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