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    E:\Working\Focus_Learning\Math_Genius_2_(09-10-2023)\Open_Files\Chap_01
                   \ 29-Feb-2024  Bharat Arora   Proof-6                                    Reader’s Sign _______________________ Date __________

                  Predecessor and Successor

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

                  Their homes are near to 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 home is next to your home. So, my house number is 365.
                  Bharti  :  My home is just before your home. So, my house number is 363.

                  david  :  It means my home is between your houses. Bharti’s home is before my

                              house and Rohan’s home 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.                        Quick 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
                      means a number which comes in the                              399 and 4 numbers just after it.

                      middle of these numbers. For example, 363  364  365

                           Practice time 1F

                  1.  Arrange the following numbers in the 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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