Page 32 - Maths Class 03
P. 32

2                    Addition of Numbers






            Looking Back


            Addition is bringing two or more numbers (or things) together to make a
            new total.





            Adding 3-digit Numbers



            Without Regrouping

            Addition of 3-digit numbers is as simple as 2-digit numbers.


              Let us revise the addition of two 2-digit numbers.


                              6   4                 3   3                4   2                5   3

                           + 5   2               + 3   3              + 3   6              + 4   1

                             11   6                 6   6                7   8                9   4


                              9   6                 2   1                9   1                4   2


                           + 1   1               + 3   1              + 2   3              + 1   1
                             10   7                 5   2              11   4                 5   3




            Adding two 3-digit numbers involves several steps.


            Example   :   Let us add 428 and 320.

            Solution   :   428 + 320



                              Step 1 :  Arrange them in columns.
                                                                                             H     T    O
                                                                                             4     2     8

                                                                                         +   3     2     0








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