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Common Denominator means that the denominators in two (or more) fractions are common, or the same. The common denominator is important because before you can add or subtract fractions, the fractions need to have a common denominator.
Sometimes fractions have different denominators, like 2/3 and 3/4. If you want to add or subtract them, they need to have the same denominator. In order to do that, you find a common denominator which is the same thing as a common multiple, only with denominators.

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โˆ™ 2017-12-04 12:43:15
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Anonymous

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โˆ™ 2020-09-29 15:41:09
I am doing ย the quiz and I answer all of them correct , still do not get why I am doing itย 

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Q: Why do you need a common denominator?
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Related questions

Does division need a common denominator?

No, You only need a common denominator when adding or subtracting fractions.


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