Page 131 - New Medley 1 Semester 1
P. 131

Addition by Forward Counting



        Suppose we have to add 5 and 7:  5 + 7

        We can add by starting from 5 and counting 7 steps forwards.



                          1          2           3          4           5          6           7










        We reach 12.


        So   5 + 7 = 12


         A.  Add the following by counting forwards.


              1.  3 + 6 =



              2.  4 + 7 =



              3.  7 + 4 =



              4.  8 + 5 =



         B.  Now do it mentally.


              5.  8 + 7 =


              6.  8 + 8 =


              7.  4 + 6 =


              8.  7 + 8 =



              9.  9 + 5 =


            10.  9 + 9 =



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