Page 88 - บทที่ 1
P. 88

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                                                 9 X 2                            2 + 5       =


                 4 + 0 =                       14 - 7        —                    6x3 =


                 7 - 4 =                         2 + 7                            8 - 1 =



                  5x3 =                          7 x9        —                    6 + 8       =



               10 - 4 =                        13 - 8        —                    6x7 =


                 5 + 2 =                         5 X 1       —                    1 + 8       =



                  3x4 =                          7 + 4        —                   8x6 =



                  8 - 7 =                        9 - 4        —                   5 + 3       =


                  5x5 =                          3 + 2        —                 10 - 6        =



               17 - 9 =                          8 - 3        —                   4 - 0       =


                  0x7 =                          7 x4         —                   7 + 5       =



                  8 + 8 =                        6 + 7        —                   8x8 =



                  4x2 =                          7 - 3                          10 - 1        =


                  2x9 =                          9 + 3        —                 10 - 8        =



                  9 + 7 =                        7 X 7        —                   2x2 =


                15 - 6 =                         2 + 9        —                 13 - 7        =



                  8 + 3 =                      12 - 3         —                   9 + 2       =


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