Page 23 - SPARK OF MATH book 6
P. 23

(2-2) Divide Fractions.





                                   1
                    Find     3 ÷        using models.
                                   2

                    Step 1: draw 3 shapes.









                    Step 2: divide each shape for 2 parts.









                    Note that there are 6 parts.



                    and     3  ×  2  =  6
                                 1



              Remember that division is the inverse operation of
              multiplication.Therefore, dividing by a fraction can

              be done by multiplying by its reciprocal.

              The reciprocal of a fraction is just the fraction
              turned upside down, so that the numerator and

              denominator have switched places.


                                     Example:



                                  3    1                                    1      2
                                  4    6                                    3      5
                                  3    6    18    4  2
                                  4    1     4      4
                                                                            1      5     1   5     5
                                keep change flip                            3      2     3   2     6









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