Explain why it is necessary to have a common denominator when adding or subtracting fractions. Then solve 4/5 + 11/12

A common denominator allows you to add or subtract the numerators because the fractions are then representing parts of the same whole.

Adding and Subtracting Unlike Fractions

6th GradeMath45 min

I can add and subtract fractions with unlike denominators.

16 min

Adding and Subtracting Fractions with Unlike Denominators | Math with Mr. J

Math with Mr. J

9 min

Key concepts students will learn:

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When adding or subtracting fractions with unlike denominators, you must first find a common denominator.
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To find a common denominator, find the least common multiple of the original denominators.
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When you rename a fraction, remember that whatever you do to the denominator, you also have to do to the numerator to keep the fractions equivalent.

14 min

5 questions • Multiple choice & Short answer

5 min

“Solve the following problems. Show all steps including finding the common denominator. Problem 1: Add ⅖ + ⅓ Problem 2: Subtract ¾ - ⅚”

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