Page 34 - Maths Class 03
P. 34

5 6 6 7                   5 1 3 4                  4 6 4 7

                      9560                 +    3 8 9 3             +     3 8 2 6             +    4 1 9 3






                                                2 9 4 9                   2 6 3 9                  2 9 3 9


                      7497                 +    4 5 7 8             +     4 3 5 8             +    4 5 5 8






                                                3 1 2 7                   1 1 2 7                  1 1 2 7

                      10711                +    7 2 8 4             +     9 5 8 4             +    9 8 8 4








            Addition of 3-Digit Numbers


            With Regrouping

            Example  :   Add : 248 and 429.

                                                                                                     H     T     O

            Solution  :  Step 1  : Place one number above the other
                                                                                                      2    4     8
                                            so  that  the  hundreds,  tens  and
                                                                                                  +   4    2     9
                                            ones places are lined up.
                                                                                                                 7




                              H     T    O         Step 2 :  Add the ones place digits (8 + 9 = 17).
                                  1
                              2     4     8                      This number is larger than 10, so write

                          +   4     2     9                      1  above  the  tens  place  column  and
                                                                 write 7 below ones place column.
                                          7





                         Step 3 :  Add the tens place digits (1 + 4 + 2 = 7)                           H     T     O
                                                                                                            1
                                       and  write  the  answer  i.e.,  7  below  the                   2     4     8
                                       tens place column.                                           +  4     2     9


                                                                                                             7     7


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