Add Fractions (Mixed Numbers) With Unlike Denominators Part 2
Channel: Mr McGlover
Date: 2011-09-21

Fractions, mixed numbers, addition!  Printable worksheet here: https://docs.google.com/document/d/1GNnY6KrHAKuwhvPrxGmiND3VilR8W6HKLe4wOkCelEI/edit

This method is for students that want to solve the problem the same way every time. This method will produce the correct answer every time, but the student may have to simplify the fraction once finished. Nonetheless, at least the student can produce the correct answer every time!

Note: Any mixed numbers have to be changed to improper fractions first.
1) Multiply the denominators (bottom numbers). This is the denominator in your answer.
2) Multiply the diagonals. Place the answers above the fractions (see video).
3) Add the numbers you placed above the fractions (this is the numerator of your answer [top number]). 

Another Note: You can use this method for subtraction of fractions. To do that, subtract the numbers in step 3 instead of adding them.

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