Lesson 6 - Multiplying Fractions

  


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Multiplying fractions is the easiest operation when dealing with fractions.  Simply multiply the numerators together and the denominators together.  If possible, look for common factors before multiplying.
       

For example:

 

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First, multiply numerators and denominators.  Then, simplify.  fract_ml3.gif (1290 bytes)
  

Another example:

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First, instead of multiplying across, find common factors of the numerators and denominators.  frac_ml7.gif (1137 bytes)frac_ml5.gif (1517 bytes)
  		 There are factors in common to 7 & 21 and 18 & 10.  There is one 7 in 7 and three 7s in 21.  There are two 9s in 18 and two 5s in 10. 
Next, multiply.   frac_ml6.gif (1180 bytes)
  
  Need some practice?  

  

Extension Activities - Multiplying Fractions

  

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