Introduction to Fractions Part 3

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Taught by muchomath
  • Currently 4.0/5 Stars.
5640 views | 2 ratings
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this introductory lesson on fractions, Professor Perez from Saddleback College teaches how to change fractions with different denominators using arithmetic. He uses the example of subtracting 3/2 from 2/3 plus 5/6, and demonstrates how to change each fraction to have a denominator of 6. He then goes on to show how to reduce the resulting fraction, 10/6, to 5/3. The lesson is a great starting point for those looking to learn more about fractions.

Lesson Description:

The third part of the introductory series on 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 add and subtract fractions with different denominators using a number line?
  • How do you find common denominators to add and subtract fractions with different denominators?
  • How do you find common denominators using a number line?
  • How can you teach adding and subtracting fractions with different denominators using a number line?
  • How do you find LCD using a number line?
  • Staff Review

    • Currently 4.0/5 Stars.
    This video explains adding and subtracting fractions with different denominators with and without a number line. Common denominators are found in order to do the calculations. A number line is used to show how common denominators can be found, but the Algebra is shown as well. This is a very good lesson on adding / subtracting fractions.