Page 23 - MTH 1
P. 23

Order in Addtion






                                          and                                 are             7      bats.




                     So,                              3   +   4   =   7



              This is an example of Horizontal method                            .



                                                                 3




                                                             + 4



                                                                 7




              This is called Vertical method                   .



                            Similarly, 3 + 4 = 7   or   4 + 3 = 7.

              So change in order does not change the sum.



                  Add in two way.


                                                    3                                                      3

                                               +  4                                                    +  6
                4  +  3  =                                             6  +  3  =





                                                    7                                                      5

                                               +  2                                                    +  3
                2  +  7  =                                             3  +  5  =





                                                    1                                                      7
                                               +  6                                                    +  1
                6  +  1  =                                             1  +  7  =




                                                                                                                   23
                                                                                      Mathematics In Focus - 1
   18   19   20   21   22   23   24   25   26   27   28