Page 134 - บทที่ 1
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131


                                                                                                       8 +
                                                                                                i
                                                                           13 - 7
                                       9x3
                                                           =
                                                                                                   X 1
                                          15-6
                                                                                                       2
                                                                        9 + 5
                                                           =
                                                                                                    +
                                        8 + 5
                                                                                                       3
                                                           =
                                                                        8x4
                                                                                                   —
                                                                                                1
                                       8x9
                                                           =
                                                                                                         12
                                                                           10 - 9
                                                                                                       6 X '
                                                                         4 + 5
                                        7-4
                                                           =
                                                                                                    +
                                                                                                1
                                                                                                       4
                                                                        3 - 2
                                        3 + 8
                                                           =
                                                                                                         10
                                       5x2
                                                           =
                                                                        5x7
                                                                                                       1 X
                                        4 - 1
                                                                           11 - 5
                                                           =
                                                                                                1
                                                                                                   —
                                                                                                       8
                                       4x8
                                                                        7x2
                                                           =
                                                                                                       9 X '
                                                           =
                                                                        2 + 6
                                        2 + 5
                                                                                                    +
                                                                                                :
                                                                                                       2
                                       6x7
                                                           =
                                                                           13 - 4
                                                                                                    +
                                                                                                '
                                          10-8
                                                                        8 + 9
                                                           =
                                                                                                       8
                                                           =
                                        6 + 6
                                                                                                       6
                                                                        7 + 4
                                                                                                       7 +
                                                                                                :
                                        9-5
                                                           =
                                                                        5 + 3
                                       5x5
                                                                        6 + 4
                                                           =
                                                                                                1
                                                                                                       9
                                                                                                       6 X
                                        6 + 1
                                                                        9 - 8
                                                           =
                                       9x5
                                                                        4x3
                                                           =
                                                                                         unvi
                                                                                Qunv)
                    •t' K-
                         Tiiv!
          . .1
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