Operations with fractions

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Taught by muchomath
  • Currently 4.0/5 Stars.
7612 views | 3 ratings
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson on operations with fractions, Professor Perez reviews addition, subtraction, multiplication, and division of fractions before putting them all together. The key takeaway is that fractions can only be added or subtracted when their denominators are the same, so the process of finding the lowest common denominator is crucial. The lesson also covers more advanced problems involving variables in the denominators and a combination of addition and division.

Lesson Description:

Learn more tricks and operations with fractions.

Created by and copyright of Larry Perez. Funded by the state of California through Saddleback College. More information on videos, resources, and lessons at Algebra2Go.

Questions answered by this video:
  • How do you find the lowest common denominator?
  • What is an LCD?
  • How do you add and subtract fractions?
  • How do you find the lowest common denominator when there is a variable in a fraction?
  • How do you divide fractions?
  • Staff Review

    • Currently 4.0/5 Stars.
    This video has many example problems of adding and subtracting fractions by finding common denominators. Subtracting a negative and adding / subtracting fractions with a variable in the denominator are also explained. Division of fractions is also covered. Finally, order of operations is used to compute solutions in a flurry of review problems.