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Three Steps To Teach Least Common Multiple

Posted October 24th, 2010 by Michelle Flaming
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I often get asked the question, why do students need to learn how to find the LCM of two or more numbers.  I can only think of two mathematical examples, the first is to find common denominators for fractions so that we can add the fractions more easily.   For example, if we have the fractions 1/4, 1/3, and 1/6, we could use the LCM to create equivalent fractions to add quickly and easily. 

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