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    E:\Working\Focus_Learning\Math_Genius_1_(05-10-2023)\Open_Files\08_Chap_7\Chap_7
                   \ 11-Sep-2024  Bharat arora   Proof-6                                    Reader’s Sign _______________________ Date __________

                  Addition And subtrACtion using exPAnded form

                  Example 1: Add: 33 + 45                               Example 2: Subtract: 78 – 33

                  Solution:                                             Solution:

                     tens Ones                                             tens Ones

                       3      3    =    3 tens     +    3 ones               7      8    =    7 tens     +    8 ones

                   +   4      5    =    4 tens     +    5 ones           –   3      3    =    3 tens     +    3 ones

                       7      8    =    7 tens     +    8 ones               4      5    =    4 tens     +    5 ones

                  There are two subtraction facts for 33 + 45 = 78. One 78 – 33 = 45 is done above.

                  Write the other one.  __________

                           Practice time 7g

                  1.   Add the following by expanding the numbers.

                       (a)  34 and 23                                   (b) 45 and 23

                              tens Ones                                          tens Ones

                                            =             +                                    =            +

                            +               =             +                    +               =            +
                                            =             +                                    =            +

                        (c) 41 and 32                                   (d)  55 and 11

                              tens Ones                                          tens Ones

                                            =             +                                    =            +

                            +               =             +                    +               =            +
                                            =             +                                    =            +

                       (e) 67 and 31                                     (f)  14 and 61

                              tens Ones                                          tens Ones

                                            =             +                                    =            +

                            +               =             +                    +               =            +
                                            =             +                                    =            +

                 112                                                                                     Mathematics-1

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