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    E:\Working\Brother_Education\Foundational_Stage_Maths-1_(11-09-2024)\Open_Files\Chap_4
                   \ 26-Oct-2023  Surender Prajapati   Proof-3                              Reader’s Sign _______________________ Date __________

                  Some more examples:

                  (a)                       Tens                      (b)                        Tens
                              tens Ones                                            tens Ones
                                       4            Ones                             1     3             Ones
                            +   1      5                                        +          5
                                1      9                                             1     8

                           Practice time 4g

                  1.  Find the sum of the following. One has been done for you.

                       (a)  tens Ones          (b)  tens Ones            (c)  tens Ones          (d)  tens Ones
                                1      2                 1     3                  1     4                  1     1
                            +          4            +          1             +          5             +          2

                                1      6
                       (e)  tens Ones           (f)  tens Ones          (g)  tens Ones           (h)  tens Ones

                                1      3                 1     8                  1     2                  1     6
                            +          3            +          1             +          6             +          2

                  2.  Add and observe the answer.

                       (a) 10 + 4 =                     (b)  10 + 5 =                    (c)  10 + 8 =

                       (d) 10 + 3 =                     (e)  10 + 9 =                     (f)  10 + 2 =

                       (g) 10 + 6 =                     (h)  10 + 1 =                     (i)  10 + 7 =

                  ProPerty oF Addition

                  Adding Zero (0)

                     There is no bird          4 birds come and sit on the            How many birds are there

                     on the tree.              tree.                                  on the tree now?
                                                                                      Clearly, 4.

                                                                                      So, 0 + 4 = 4.
                                                                                      Similarly, 4 + 0 = 4

                   When we add any number to zero or zero to any number, we get the same number.

                  Mathematics-1                                                                                          67

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