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D:\Surender Prajapati\Books Final_CBSE and ICSE\ICSE\Preparatory_Stage_Maths-5_(31-10-2023)\Open_Files\CHAP_02
              \\November 3, 2023 10:57 AM   Surender Prajapati   Proof 5   Reader _________________________   Date: ___________________74





              When  a  number  is  divided  by  another  number  and  a  number  smaller  than  the  divisor  is
              left over, the left over number is called the remainder (R).

              Larger numbers are divided in the same way as smaller numbers.

              Example 1: Divide 504085 by 6 and check the answer.

              Solution:                   8 4 0 1 4       Quotient Step 1:  Since 5 < 6, we divide 2-digit number
                            Divisor   6   5 0 4 0 8 5     Dividend         50 by 6. 6 × 8 = 48 < 50 and 6 × 9 =
                                      –  4 8                               54 > 50. So, subtract 48 from 50 and
                                           2 4
                                        –  2 4                             bring down 4.
                                               0 8                Step 2:  24 is the new dividend. Here, 6 × 4
                                            –     6                        = 24. Subtract 24 from 24 and bring
                                                  2 5                      down 0.
                                               –  2 4
                                                    1    Remainder  Step 3:  Since  0  <  6, put 0 in quotient and
                                                                           bring down 8. Now, 08 is the new

                            Checking:                                      partial dividend. Here, 6 × 1 = 6 < 8
                            Quotient  × Divisor  + Remainder               and 6 × 2 = 12 > 8. So, subtract 6
                            = Dividend                                     from 8 and bring down 5.
                            84014 × 6 + 1 = 504084 + 1            Step 4:  25 is the new dividend. Here, 6 × 4 =

                                              = 504085.                    24 < 25, Subtract 25 – 24 = 1. Now,
                            The division is correct.                       no number is left to bring down, so,
                                                                           stop the process.


                                                                  Thus, Quotient = 84014 and Remainder = 1

              Example 2: Find the quotient and remainder for the following and check the answer.
                    (a)  86345 ÷ 23                                  (b)  621575 ÷ 25

              Solution:                     3 7 5 4     Q        Step 1:  Since 8 < 23, we divide 86 by 23.
                    (a)     Divisor   23  8 6 3 4 5     Dividend          We do not know the table of 23,
                                       –  6 9
                                          1 7 3                            so think: 2   8 is 4. 23  86 is about 4.
                                       –  1 6 1                           Multiply 23 × 4 = 92 > 86

                                            1 2 4                          so, take 23 × 3 = 69 < 86.
                                          –  1 1 5                        Subtract 69 from 86 and bring down 3.

                                                9 5              Step 2: Now, the new dividend is 173 > 23.
                                              –  9 2
                                                   3    R                  Divide 23   173
                                                                          Think: 2   17  is about 8.

                                                                          Thus, 23   173 is about 8.
                                                                          Multiply 23 × 8 = 184 > 173,

                                                                           so take 23 × 7 = 161 < 173
                                                                          Subtract 161 from 173 and bring down 4.


              Mathematics-5                                                                                          41
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