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H      T      O                    H      T     O                    H      T      O
              (e)                               (f)                               (g)
                         4      ?      7                    ?      6     9                    8      8      ?

                    –    2      3      ?              –     5      2      ?              –    4      ?      1


                          ?     5      2                    4      ?     8                     ?     6      3



                         H      T      O                    H      T     O                    H      T      O
              (h)                                (i)                               (j)
                          ?     3      ?                    9      ?     0                    7      5      ?


                    –    6      2      4              –     ?      5      ?              –     ?     ?      2

                         3      ?      2                    3      2     0                    6      0      4




            Word Problems


            Look at the given examples.

              1.  580 students went for an excursion to Goa during summer vacations. There
                   were 375 boys in the group. How many were girls?

                                                      H      T      O
                                                             7
                   Total students                     5      8      10
                                                                    0
                   Number of boys                –    3      7      5


                   Number of girls                    2      0      5


                   Answer:  There were 205 girls.


              2.  A florist had 256 roses. On New Year’s Eve, he was left with 25 roses. How
                   many roses did he sell?


                                                      H      T      O
                   Total roses                        2      5      6


                   Roses left                    –           2      5


                   Roses sold                         2      3      1


                   Answer:  The florist sold 231 roses.




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