Arithmetic Grade Four

Lesson Eighty-six: Adding Fractions

You will recall:

Adding Fractions With Like Denominators


But what happens if the answer is an improper fraction?

It is best to convert an improper fraction to a mixed number. Here's an example: 


       7         5            12
      ---   +   ---    =     ----
       8         8             8   

      Convert improper fraction 12/8  to mixed number 1 4/8.

      Remember to reduce (if necessary): 1 4/8  =  1  1/2

In case you don't remember how to convert an improper fraction into a mixed number, here's a little reminder: 

     Improper Fraction:   13/10

     Conversion Step One:  Divide 13 by 10.

     Conversion Step Two:  Write quotient as whole number.

     Conversion Step Three:  Write remainder as numerator written over
                             existing denominator.

     Reduce the fraction portion of the mixed number, if necessary.

     ANSWER:  1  3/10

Now you get to try a few for yourself.

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