Page 1 - Lesson Note 8
P. 1

Subject – Mathematics


                               Chapter 2 – OPERATION ON LARGE NUMBERS

        Sub-topic 8 : Long division by 2 or 3 digit number


              Introduction - Division means equal distribution. We use long division method for dividing
               large numbers.
              Long Division Method:

        Example 1: 1,89,09,852 ÷ 23


                                    822167

                      23      18909852

                                184


                                    50

                                    46

                                      49

                                      46


                                        38

                                        23

                                        155

                                        138


                                          172

                                          161

                                           11


        Step 1:

              Here, the divisor is a 2-digit number.
              So, consider the number formed by 2 extreme left digits of the dividend.
              It is 18. But, 18<23.
              So, take the number formed by 3 leftmost digits if the dividend.
              It is 189.
              Let us see how many times 23 is contained in 189.
              Now, 23 x 8 = 184 and 23 x 9 = 207.
              184<189 while 207>189.
              So, we will take 184.
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