Page 147 - New Medley 5 Semester 1
P. 147

Example 15:  Find the number that, when added to 725832, will make
                            it completely divisible by 468.

        Solution:           Here, we have to find the difference between divisor and

                            remainder  because  when  this  difference  will  be  added  to
                            the dividend, it will be divisible by the divisor.


                                                        1 5 5 0
                                                468     7 2 5 8 3 2

                                                      – 4 6 8
                                                        2 5 7 8

                                                      – 2 3 4 0
                                                           2 3 8 3

                                                        – 2 3 4 0
                                                                 4 3 2

                                                              – 0 0 0
                                                                 4 3 2


                            From  the  division  725832  ÷  468,  we  get  Q  =  1550  and
                            R = 432.

                            So, the required number = 468 – 432 = 36


        Note: Sometimes, we are asked to find a number which when subtracted
        from the given number will make it divisible by another number. In that

        case, the remainder is the required number. Here, 432 will be the required
        number.



                                                EXERCISE 2.4



         A.  Find the quotient and remainder and check.

              1.   38  9854                    2.   78  49758                   3.  200 47853
              4.   308 687604                  5.   88  608005                  6.  526    987600


         B.  Divide the following:

              1.  36950 ÷ 75                   2.  497461 ÷ 32                  3.  6749563 ÷ 89

              4.  27698 ÷ 230                  5.  857216 ÷ 345                 6.  9874628 ÷ 915


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