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    E:\Working\Focus_Learning\Math_Genius_3_(11-09-2024)\Open_Files\CHAP_02
                 \ 12-Sep-2024               Surender Prajapati   Proof-4                     Reader’s Sign _______________________ Date __________

                  2.  Find the sum by expanding the addends.

                       (a)  217 + 562                   (b)  481 + 318                   (c)  645 + 152
                       (d)  516 + 273                   (e)  424 + 263                    (f)  385 + 512

                  Addition of 3-digit numbers with regrouping

                  Addition of 3-digit numbers by regrouping ones

                  When we have more than 9 ones, say 12 ones, we can regrouped 12 ones into 1 ten and
                  2 ones. For Example,

                                                                         Similarly, 2 tens 16 ones can be regroup as
                                                                         3 tens 6 ones as shown below.

                              1 ten 12 ones       2 tens 2 ones                2 tens 16 ones        3 tens 6 ones

                  Rohit’s father runs a bakery shop.
                  His father got an order of 629 cheese pastries and 353 chocolate pastries.

                  rohit: How many total pastries will you make, father?

                  Father: I will make 982 pastries in total.

                  rohit: How?
                  Father: By adding 629 and 353.

                  Let us learn, how Rohit’s father added 629 and 353.

                  Write the numbers in the place value column.
                  Step 1: Add the ones.                                                                       H   t    O

                            9 + 3 = 12 ones.                                                                      1
                             Regroup 12 ones into 1 ten and 2 ones.                                           6   2    9

                             Write 2 in ones column and carry over 1 ten to the tens column.              + 3     5    3
                                                                                                                       2

                  Step 2: Add the tens.                                                                       H   t    O
                            1 (carried over) + 2 + 5 = 8 tens                                                     1

                            Write 8 in tens column.                                                           6   2    9
                                                                                                          + 3     5    3
                                                                                                                  8    2

                  Mathematics-3                                                                                          31

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