Fractions

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Fractions

• By Christa Hiltibrand
• Third Grade

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Table of Contents

• Properties in Fractions
• Numerator
• Denominator
• Adding Fractions
• Same Denominator
• Different Denominator
• Whole Numbers with fractions

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Contents Continue

• Subtracting Fractions
• Same Denominator
• Different Denominator
• Mixed Number with fractions
• Multiplying Fractions
• Multiplying Numerators and Denominators
• Whole Numbers
• Reducing

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Contents Continue

• Dividing Fractions
• Changing to multiplication
• Mixed number
• Reducing

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Properties in Fractions

• Numerator is the number of parts chosen.
• Numerator
• Denominator
• Denominator is the total number of parts.

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Adding Fractions

• Adding same denominator fractions
• When adding same denominator fractions, the only
  thing that will be different is the numerator.
• The denominator are always the same in addition.
  We do not add the denominators.

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Adding Continue

• Different denominators must be changed to same
  denominators before one can add them together.

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Adding Continue

• Mixed Fractions
• Mixed fractions are a combination of a whole
  number and a fraction.

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Subtracting Fractions

• Subtracting fractions with same denominator is
  just like adding same denominator fractions.

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Subtractions Continue

• Different denominators must always be the same.
  So just make sure the denominators are the same
  and start subtracting.

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Subtractions Continue

• Mixed Numbers still must have the same
  denominator then you can subtract them.

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Multiplying Fractions

• When you multiply fractions, the numerator are
  multiply then your denominators are multiplied
  together.

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Multiplying Continue

• Mixed numbers are easier when you change them
  into fractions then multiply them.

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Multiplying Continue

• Reducing the fractions are the same as with
  adding and subtracting fraction. How many times
  will 7 go into 24?

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Dividing Fractions

• When we divide fractions, we flip the divisor
  which is called the reciprocal. Then you
  multiply across.

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Division Continue

• When there are mixed numbers involved
• 1. Put them into fractions
• 2. Flip the reciprocal
• 3. Then multiply

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Dividing Continue

• Reducing the fraction into simplest form and
  back into a mixed number.

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References

• Mathematics For Elementary Teachers
• Sixth Edition
• http//cne.gmu.edu/modules/dau/algebra/fractions/f
  rac1_frm.html
• http//www.blarg.net/math/FDU2.HTM
• http//www.blarg.net/math/FDMENU.HTM
• http//home.xnet.com/fidler/triton/math/review/ma
  t045/fraction/mix/md/md.htm