Page 66 - บทที่ 1
P. 66

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                                                                                               ouvi    mfiM







               LQ^inviLfuvin  lA'lVI    Tunvi
                                                5 + 8 =                          9   X 0     —


              14 - 7 =                           2x8 =                           6   + 8     —



                3 + 9 =                         9 + 0 =                          1 + 5



                8 - 3 =                       16 - 8        =                    3 X 7       —


                 5x3 =                          8 + 5 =                          5   + 7     —



              10 - 7 =                           5x6 =                           9   X 3     —


                7 + 1 =                         5 - 4 =                          7   —  7    —



                9 + 2 =                       12 - 3 =                         14    —  9    —



                9 - 4 =                          1 + 3 =                         9   X 6     —


                 8x3 =                        10 - 1 =                         11    —  8    —



              12 - 8 =                           9x8 =                           7  + 3      —



                 1x3 =                           3x3 =                           8   X 9     —


                4 + 9 =                         6 - 4       =                    5   X 4



                8 - 7 =                       14 - 6 =                           2  + 2      —


                8 + 1 =                          5x5 =                           4   X 9     —



              15 - 6 =                          3 + 4       =                    7  + 8


                 3x2 =                          6 + 4 =                          7      3    —


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