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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 __________

                       (d)    th H      t    O          (e)     th H     t    O          (f)     th H      t   O

                                    5   6    4                       8   0    8                       7    9   6
                            +       4   4    8               +       8   8    0                       3    4   8
                                                                                              +       4    2   2

                  3.  Write in columns and add.

                       (a)  622 + 297                   (b)  636 + 243                   (c)  399 + 455

                       (d)  632 + 398                   (e)  436 + 243 + 364              (f)  326 + 836 + 248

                  Addition of 4-digit numbers

                  Adding 4-digit numbers is the same as adding 3-digit numbers.
                  Beginning with adding the ones, move on to adding the tens, then

                  hundreds and finally, the thousands.

                  Addition of 4-digit numbers without regrouping

                  Shruti and her father went to see their orchard.

                  Shruti: How many trees are there in our orchard?

                  Father: There are 2326 mango trees and 1253 apple trees.

                  Shruti: How do we find the total number of trees?
                  Father: We can find the total number of trees by adding them.

                  Write the numbers in columns and use the following steps:

                  Step 1: Add the ones.                                   6 + 3 = 9 ones

                           Write 9 in the ones column.

                  Step 2: Add the tens.                                   2 + 5 = 7 tens                th H      t    O
                           Write 7 in the tens column.                                                   2    3   2    6

                  Step 3: Add the hundreds.                               3 + 2 = 5 hundreds          + 1     2   5    3
                           Write 5 in the hundreds column.                                               3    5   7    9

                  Step 4: Add the thousands.                              2 + 1 = 3 thousands
                           Write 3 in the thousands column.

                           Thus, the sum of 2326 and 1253 is
                           3579.

                  36                                                                                    Mathematics-3

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