Addition and Subtraction of Fractions - PowerPoint PPT Presentation

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Addition and Subtraction of Fractions

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4/5= 12/15 Get the equivalent fractions. 2/3 = 10/15. 12/15 10/15 = 22/15. 22/15 = 1 7/15 ... Get the equivalent fraction. = 9/12, 1/3 = 4/12. 9/12- 4/12 ... – PowerPoint PPT presentation

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Title: Addition and Subtraction of Fractions


1
Addition and Subtraction of Fractions
  • Problems of the day 2/9 4/9
  • 1/3 ¼

2
Like denominators2/9 4/9
  • 2 /9 4/9 24/ 9 Keep the denominators the
    same. Add the numerators.
  • 6/9 63/93 2/3 Simplify.

3
Different Denominators
  • 4/5 2/3
  • Find a common denominator 15
  • 4/5 12/15 Get the equivalent fractions
  • 2/3 10/15
  • 12/15 10/15 22/15
  • 22/15 1 7/15

4
You try it.
  • Add 3/5 1/5
  • 7/8 3/8
  • 1/3 1/8
  • ¾ 1/6
  • 4/5 1/3

5
Subtract fractions
  • 2/5 1/5 1/5 Keep the denominator. Subtract
    the numerator.
  • ¾ - 1/3 Get a common denominator 12
  • Get the equivalent fraction.
  • ¾ 9/12, 1/3 4/12
  • 9/12- 4/12 5/12

6
Homework p. 194 1-33
  • Good luck with your homework.
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