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Algebra Applications Unit 1   Tags: algebra, algebra applications, mahlman, math  

Orders of Operations
Last Updated: Apr 6, 2012 URL: http://libguides.mpsaz.net/content.php?pid=112328 Print Guide RSS Updates

Fractions and Decimals Print Page
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Theorem

Decimals

        Addition and Subtractions:

              Line up decimals before adding or subtracting:

                   Example:

                                        

          Multiplying:

           count the number of decimals between the two number and move the decimals that many spots in the final answer.

             Example:

                     

         Dividing:

            Have to divide by a whole number.

                Example:

                   

Fractions

         Multiplying

               Multiply straight across

                   Example:

                      

         Dividing

             Multiply by reciprocals

                   Example:6  2/8  ÷  3  5/9                       

Convert each mixed number to an improper fraction. 50/8  ÷  32/9
Invert the improper fraction that is the divisor and multiply. 50/8 * 9/32
Multiply the two numerators together. 50 * 9 = 450
Multiply the two denominators together. 8 * 32 = 256
Convert the result back to a mixed number. 450/256 = 1   194/256
Simplify the mixed number. 1  97/128

        

            Adding/Subtracting

            Common Denominators

                   Example:          

                               

 

 

Adding and Subtracting unlike denominators

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