(Решите столбиком пожалуйста) а) (21,2544:0,9+1,02*3,2) : 5,6 = б) 4,36:(3,15+2,3)+(0,792-0,78)*350= в) (3,91:2,3*5,4-4,03)*2,4= г) 6,93:(0,028+0,36*4,2)-3,5=

2

Ответы и объяснения

2013-04-19T23:31:06+04:00

г)0,36          0,028      6,93/1,54=693  / 154           4,5

     4,2          1,512                       616   4,5             3,5

      72          1,54                            770                  1,0

 144                                                770

 1,512                                                 0

2013-04-19T23:58:29+04:00

а) 1)212.544    ÷ 9                                  2)  1,02           3)  23,616             4)268,8    ÷56

         18                  23,616                          ×3,2                 +  3,264                  224        4,8

           32                                                          204                 26,880                   448

            27                                                       306                                                   448

              55                                                     3,264                                                  0

              54

                14

                  9

                  54

                   54

                    0

 

б) 1)3,15+2,3= 5,45

2)4360     ÷  545                       3)  0,792

   4360         0,8                           -0,78

      0                                            0,012

 

4) 0,012        5) 0,8+4,2=5

  ×350

       60

     36

    4,200

 

 

в) 1)  39,1   ÷  23                       2)    1,7       3) 9,18-4,03= 5,15   4)  5,15

         23         1,7                           ×5,4                                       ×2,4

         161                                          68                                         2060

         161                                         85                                        1030

          0                                          9,18                                      12,360

 

 

г)    1)  0,36       2) 0,028+1,512=1,54     3)  693  ÷154                4) 4,5-3,5=1

          ×4,2                                                616    4,5

             72                                                  770

         144                                                    770

         1,512                                                   0