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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 __________

                  Predecessor and Successor

                  Three neighbourhood friends David, Rohan and Bharti are going home after school.

                  Their homes are near the school.

                                      363                           364                          365

                               (Bharti’s house)             (David’s house)               (Rohan’s house)

                  david  :  My house number is 364. What are your house numbers Rohan and
                              Bharti?

                  rohan :  My house is next to your house. So, my house number is 365.
                  Bharti  :  My house is just before your house. So, my house number is 363.

                  david  :  That means my house is between your houses. Bharti’s house is before

                              my house and Rohan’s house is after my house.
                  •  Predecessor of a number means a number which is 1 less than the given number.

                      It is just before the given number. For example, 364 – 1 = 363

                  •  Successor of a number means a number
                      which is 1 more than the given number.                        Fast Check
                      It is just after the given number.                         1.  Write the predecessor and  the

                    For example, 364 + 1 = 365                                       successor of 200.

                  •  A number between the two given numbers                      2.   Write 4 numbers  just  before
                                                                                     399 and 4 numbers just after it.
                      means a number which comes in the

                      middle of these numbers. For example, 363  364  365

                           Practice time 1F

                  1.  Arrange the following numbers in ascending (increasing) order.

                       (a) 120, 266, 163, 75, 87   _______________________________________

                       (b) 215, 182, 276, 142, 45   _______________________________________

                       (c) 112, 110, 271, 243, 180  _______________________________________

                       (d) 190, 113, 145, 119, 172  _______________________________________

                       (e) 297, 263, 201, 146, 259  _______________________________________

                  Mathematics-2                                                                                          25

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