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    E:\Working\Orange_Education\Math_Genius_2\Open_Files\Chap_01
                   \ 26-Sep-2025  Bharat Arora   Proof-10                                   Reader’s Sign _______________________ Date __________

                  For the counting numbers 1, 2 and 3, the ordinal numbers are first, second and

                  third. All other ordinal numbers are written by adding 'th' at the end of the counting
                  number name.

                  Now, let us see how to write ordinal numbers beyond 10.

                     eleventh       Twelfth      Thirteenth Fourteenth Fifteenth             Sixteenth Seventeenth

                       11th           12th           13th          14th           15th          16th           17th
                                                                 Twenty-        Twenty-       Twenty-        Twenty-
                   eighteenth Nineteenth Twentieth
                                                                    first       second          third         fourth
                       18th           19th           20th           21st          22nd          23rd           24th

                        activity
                                                                                                               Experiential Learning
                    1.   Arrange a few things in a line. E.g., duster, notebook, chalk, water bottle,
                        etc.
                    2.   Ask questions like: ‘What is the position of the water bottle?’ or ‘Which object is at
                        the fourth position?’

                    3.   You may ask some tricky questions like: ‘What is the position of the water bottle from the
                        right?’

                           Practice time 1H

                  1.  Study the order of the children starting from the left in the ‘Chhuk-Chhuk Train’.

                                                                                                  rohit
                                                                            Bindia  Akhil   Irfan           Tia
                                      raman        ria               Bunty                                      Tony
                                                              Sunny

                       Complete the given sentences with their positions. One has been done for you.

                       (a) Irfan is at the ________ place.              (b) Bunty is at the ________ place.
                                               seventh
                       (c) Tia is at the ________ place.                (d) Raman is at the ________ place.

                  Mathematics-2                                                                                          29

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