Addition and Subtraction of Fractions

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Addition and Subtraction of Fractions

• By Charatie Waldrep

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This is how its done

• 2 1 3 or 1
• 3 3 3

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How to subtract

• 2 - 1 1
• 3 3 3

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• 2 1 3 or 1
• 3 3 3
• Add the numerators only. Keep the dominator the
  same.
• 2 1 3
• 3 3 3

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• Subtract the numerators and keep the denominator
  the same.

2 - 1 1 3 3 3
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If

• 11/3 - 2/3
• You would think to subtract the numerators but
  you cannot
• 1/3 - 2/3 ?
• Then you must regroup.4/3 is the same as
  1 1/3.
• 4/3 - 2/3 1/3

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Regrouping

• In order to regroup, you must multiply the whole
  number by the denominator and then add the
  numerator.
• 1 1/3 1 x 3 3
• 3 1 4
• Then put the denominator under what the result
  is. 4/3 This is also known as around
  the world multiplying.

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Quiz Time
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• 1. ¼ ¾ ???
• 2/3

4/4
4/3
1/2
Next
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• 2. 11/3 - 2/3 ???
• 6/3 1/3
• 2/3 3/3

Next
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• 2/5 1/5 ???
• 1/5 1 1/3
• 4/5 3/5

Next
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What is regrouping with fractions also known as?

• Using fractions in everyday life
• Around the world multiplying
• Butterfly multiplying
• Long division

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Works Cited

• Library Clip Art http//www.jefftech.net/library3
  03.html
• Kids Domain http//www.kidsdomain.com/clip/index.
  html
• Absolute Web Graphics Archive http//www.grsites.
  com/webgraphics/
• Clipart Backgrounds http//www.edselect.com/cli
  part.htm

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Continued Works Cited

• Shelby County Schools - sample web graphics
  http//www.shelbyed.k12.al.us/webintr2awm.html
• Teacher Files http//www.teacherfiles.com/clip_ar
  t.htm
• The Teachers Parking Lothttp//www.fortunecity.c
  om/skyscraper/dos/1232/graphiclinks.html

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The End
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Correct
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Sorry, try again!