Page 52 - บทที่ 1
P. 52

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               nanviiTJjyn     unvi     Qt4nvi
                                                 4x7 =                         16 - 7 =


              14 - 7 =                           7 + 4 =                         7 - 3 =



                7 + 7       =                    5 - 1 =                         2x2 =


                 6x4 =                         16 - 8 =                          9 + 6 =



                 9x7 =                           3 + 6 =                         9 - 4       =



                2 + 6 =                          3x3 =                           7x4 =


              14 - 9 =                           4 + 8 =                       15 - 6 =



                 5x3 =                           7 - 0 =                         6 + 7 =



                8 - 3 =                          9x6 =                           9x5 =


                8 + 1 =                        11 - 2 =                          3 + 5 =



                4 + 9 =                          6x5 =                           8 + 6 =



                 7x2 =                           7 + 5 =                         9x1 =


              12 - 5 =                           2x7 =                         17 - 8        =



                1 + 0 =                          6 + 3 =                         8x4 =


                4 - 4 =                        10 - 1 =                          3 + 7       =



                 3x6 =                           5 + 2 =                         5 - 4       =


                9 + 3 =                        14 - 6 =                          8x2 =



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