How to Add Fractions with unlike denominators part 2

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
6472 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, we explore the process of adding fractions with unlike denominators. The key is to find the least common denominator, and there are multiple ways to do so. Once we have the least common denominator, we extend the fraction bar to multiply the top and bottom of each fraction by the necessary number to achieve the common denominator. After that, we simply add the numerators and simplify if possible, either by reducing or changing the fraction to a mixed number. This lesson provides several examples to help solidify this concept.

Lesson Description:

A second part to a lesson on adding fractions that do not have a common denominator.

More free YouTube videos by Julie Harland are organized at

Questions answered by this video:
  • How do you add fractions that have different denominators?
  • How do you add and reduce 3/14 + 5/12 by finding the least common denominator?
  • What is the least common denominator for 12 and 14?
  • How do you add and simplify 8/33 + 5/22?
  • How do you add and simplify 5/8 + 7/10?
  • How do you convert an improper fraction to a mixed number?
  • How do you add and simplify 8/15 + 11/20?
  • How do you add and simplify 9/20 + 7/12?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson picks up from where the previous video left off by doing some more examples of adding fractions with unlike denominators by finding the least common denominator. All steps for each problem are shown and explained in this very important lesson.