Arithmetic Grade Five

Lesson Ninety-three: Adding Mixed Numbers


Adding mixed numbers is slightly more complicated than just adding simple fractions. Here's an example:
Sample Problem: 3 3/8 + 2 3/8.
Step One: Add whole numbers. 3 3/8 + 2 3/8 = 5 + 3/8 + 3/8.
Step Two: Add the fractions. 5 + 6/8.
Step Three: Reduce the fraction (if necessary) 5 3/4.
ANSWER: 5 3/4.
Here's another example:
Sample Problem: 1 2/9 + 2 4/9.
Step One: Add whole numbers. 1 2/9 + 2 4/9 = 3 + 2/9 + 4/9.
Step Two: Add the fractions. 3 + 6/9.
Step Three: Reduce the fraction (if necessary) 3 2/3.
ANSWER: 3 2/3.


Now you get to try a few for yourself.

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