1 / 6

Adding and Subtracting Unlike Fractions

Adding and Subtracting Unlike Fractions. Lesson 4-3. Rewrite the problem with equivalent fractions. List the multiples of both denominators. Find the least common multiple (LCM). Write new fractions with the LCM as the new denominator.

quang
Télécharger la présentation

Adding and Subtracting Unlike Fractions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Adding and Subtracting Unlike Fractions Lesson 4-3

  2. Rewrite the problem with equivalent fractions • List the multiples of both denominators. • Find the least common multiple (LCM). • Write new fractions with the LCM as the new denominator. • Find the factor you multiply by to get from your original denominator to your new denominator. • Use that same factor, and multiply it by your original numerator to get a new numerator.

  3. WHAT DOES THAT MEAN? Let’s illustrate the steps with an example. 3 1 + 4 6

  4. 3 1 + 4 6 9 2 x 3 x 2 + 12 12 11 Multiples of 4: 4, 8, 12, 16, 20 12 Multiples of 6: 6, 12, 18, 24, 30

  5. Example 2 9 2 10, 20, 30, 40, 50 5, 10, 15, 20, 25 5 10 5 x 1 x 2 9 4 = 10 10 10 1 = 2

  6. Homework Time!

More Related