Page 28 - SPARK OF MATH book 5
P. 28

(2-3) Adding Fractions.


















                                 3                           1                          4
                                 5                           5                          5




                                        1             +             1             =            ?
                                        2                           4











                                                                                   =



                                       2                            1                            3
                                                      +                           =
                                        4                           4                            4

                            1         2
                  since          =         (the Least Common Multiple of 2, 4 is 4)
                            2         4

                               1        1            2        1            3
                        so         +          =           +          =
                               2        4            4        4            4





                                                         1        3
                              Think how to find              +        using models.
                                                         2        5












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