Add Fractions with Unlike Denominators: What They Don't Teach You About the Butterfly Method 

This video shows you why you should not use the Butterfly Method indiscriminately to add fractions with unlike denominators. This video shows you why the Butterfly Method is not always the most efficient way to add a pair of fractions with unlike denominators. This video illustrates how using the Butterfly trick can result in more work. Don’t just use the Butterfly trick right away without understanding.
Many videos keen to show the Butterfly trick as a hack do not adequately explain its constraints, and that by inspecting the unlike denominators, a smaller multiple could be used as the common denominator before adding the pair of fractions.
You can also view my videos in the link below to learn how to add 2 fractions with
unlike denominators by finding the Least Common Multiple first.
• Adding fractions with ...
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