Page 72 - บทที่ 1
P. 72

wvi








               n«nviL?jJvn     wnvi     QVJIVl  7x1          =                  2 + 4        =



                 3x6 =                          5 + 4        =                10 - 2         =



                8 - 3 =                         9 - 8        =                   1 +4        =


                 9x7 =                          3x4 =                            9 + 3       =



                 3 + 8 =                      17 - 8         =                11 - 5         =



                 7 + 0 =                        8x3 =                            3x7 =


                 9x2 =                          6 + 6        =                   4 + 9       =



               14 - 7 =                         9 - 2        =                   7 - 5       =



                 6 + 4 =                         5x9 =                           3 + 7       =


               16 - 9 =                          9x3 =                           4 - 1       =



                 6 - 5 =                      11 - 6         =                   6x2 =



                 1x3 =                           7x6 =                           7 + 4        =


               10 - 9 =                         7 + 5        =                 12 - 4         =



                 1 + 5 =                         5x4 =                           5x3          =


                 6x7 =                           1 + 7       =                   7x7          =



               13 - 6 =                       11 - 9         =                   4 + 4        =


                 9 + 9 =                        5 + 9        =                   7 - 1        =


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