怎样简便就怎样算. 49.5×0.2+2.07÷23 |   1350+450÷15×25 |      ÷   +   ×    |     |  (0.75-   )×(   +   ) |      ÷(3-   -   ) |   [4-(   -   )]×   . |        |  
  
         怎样简便就怎样算. 49.5×0.2+2.07÷23 |   1350+450÷15×25 |      ÷   +   ×    |     |  (0.75-   )×(   +   ) |      ÷(3-   -   ) |   [4-(   -   )]×   . |        |  
         怎样简便就怎样算. 49.5×0.2+2.07÷23 |   1350+450÷15×25 |      ÷   +   ×    |     |  (0.75-   )×(   +   ) |      ÷(3-   -   ) |   [4-(   -   )]×   . |        |  
       怎样简便就怎样算. 49.5×0.2+2.07÷23 |   1350+450÷15×25 |      ÷   +   ×    |     |  (0.75-   )×(   +   ) |      ÷(3-   -   ) |   [4-(   -   )]×   . |        |       怎样简便就怎样算. 49.5×0.2+2.07÷23 |   1350+450÷15×25 |      ÷   +   ×    |  
  |  (0.75-   )×(   +   ) |      ÷(3-   -   ) |   [4-(   -   )]×   . |  
  
     怎样简便就怎样算. 49.5×0.2+2.07÷23 |   1350+450÷15×25 |      ÷   +   ×    |  
  |  (0.75-   )×(   +   ) |      ÷(3-   -   ) |   [4-(   -   )]×   . |  
  
   怎样简便就怎样算. 49.5×0.2+2.07÷23 |   1350+450÷15×25 |      ÷   +   ×    |  
  |  (0.75-   )×(   +   ) |      ÷(3-   -   ) |   [4-(   -   )]×   . |  
   怎样简便就怎样算. 49.5×0.2+2.07÷23 |   1350+450÷15×25 |      ÷   +   ×    |  
 怎样简便就怎样算. 49.5×0.2+2.07÷23 |  1350+450÷15×25 |     ÷   +   ×    |    ÷   +   ×     |  7 |  
  |  9 |  
  |  7 |  
 7 |  |  9 |  
 9 |    +   ×     |  11 |  
  |  5 |  
  |  11 |  
 11 |  |  5 |  
 5 |    ×     |  2 |  
  |  9 |  
  |  2 |  
 2 |  |  9 |  
 9 |      |  5 |  
  |  11 |  
  |  5 |  
 5 |  |  11 |  
 11 |  |  (0.75-   )×(   +   ) |      ÷(3-   -   ) |   [4-(   -   )]×   . |  
 (0.75-   )×(   +   ) |    )×(   +   )  |  3 |  
  |  16 |  
  |  3 |  
 3 |  |  16 |  
 16 |    +   )  |  2 |  
  |  9 |  
  |  2 |  
 2 |  |  9 |  
 9 |    )  |  1 |  
  |  3 |  
  |  1 |  
 1 |  |  3 |  
 3 |     ÷(3-   -   ) |    ÷(3-   -   )  |  1 |  
  |  4 |  
  |  1 |  
 1 |  |  4 |  
 4 |    -   )  |  5 |  
  |  13 |  
  |  5 |  
 5 |  |  13 |  
 13 |    )  |  8 |  
  |  13 |  
  |  8 |  
 8 |  |  13 |  
 13 |  [4-(   -   )]×   . |    -   )]×   .  |  3 |  
  |  4 |  
  |  3 |  
 3 |  |  4 |  
 4 |    )]×   .  |  3 |  
  |  8 |  
  |  3 |  
 3 |  |  8 |  
 8 |    .  |  4 |  
  |  29 |  
  |  4 |  
 4 |  |  29 |  
 29 |