Page 49 - บทที่ 1
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7 - 4                           3x3 =                           3  + 6      —



             5 x9                            9 - 8       =                   8   X 5



             8 + 5                           6 + 1       =                   9  + 6


           15 - 9                            4x4 =                           6  —   2



             1 X 7                           7 + 6       =                 14   —   7    —



           11 - 5                            3x4 =                           5  + 5      —


             8 + 0                         11 - 8        =                   3   X 7     —



           14 - 5                            4 + 4       =                   6  + 5      —


             4 - 4                           9x1         =                   4 X 8       —



             5 X 2                           4 + 9       =                  7   + 8     —



             5 + 5                        14 - 8         =                  5   —   4   —


           12 - 7                            9x7 =                        10    —   6   —



             6 X 3                           8 - 5       =                  9   + 2


             4 + 3                           7 + 1       =                   8  X 6     —



           13 - 7                         16 - 7         =                   7  X 2     —



             4 + 5                           7x5 =                        10        4


             6 X 9                           8 + 6       =                                               ounn


                                                                                               unw       Qunvi
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