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    E:\Working\Orange_Education\TouchPad_Maths_4\Open_Files\Chap_02\Chap_02
                 \ 10-Nov-2025  Bharat Arora   Proof-8                                     Reader’s Sign _______________________ Date __________

                                                  Fun                  Activity                 21 st
                                                                                               Century
                                                                                                Skills  #Computational Thinking

                      1.  Find the mystery number.

                          a.  Take any 3-digit number where all the digits are different.
                          b.  Write the number in reverse order.

                          c.  Subtract the smaller number from the larger one.
                          d.  Reverse the result.

                          e.  Add the results obtained in steps (c) and (d).
                          Did you get 1089?

                      2.   Start from Box A and reach Box L by finding the best way through the maze.

                             StARt

                                           7908                     15144                     6558

                                             7564                                              19130
                              7918                     15244        14144        18130                     18518

                                           7864                      1144                    19030

                              8864          8564        1044         17748        3118        18030         3318

                                           7558                     17848                     3218

                                                                                                         FiNiSh

                       42        Mathematics 4

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