Download
adding and subtracting unlike fractions n.
Skip this Video
Loading SlideShow in 5 Seconds..
Adding and Subtracting Unlike Fractions PowerPoint Presentation
Download Presentation
Adding and Subtracting Unlike Fractions

Adding and Subtracting Unlike Fractions

114 Vues Download Presentation
Télécharger la présentation

Adding and Subtracting Unlike Fractions

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Adding and Subtracting Unlike Fractions Lesson 5-4:

  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. Practice Time!P266 # 12-15