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              \\December 6, 2023 1:25 PM   Bharat Arora   P-6           Reader _________________________   Date: ___________________74





                             Step 2:  Multiply 3231 by 2 ones.                                   tth th H t O

                                       3231 × 2 ones = 6462 ones.                                       3   2 3 1
                                                                                              ×                 1 2
                                                                                                        6   4 6 2

                             Step 3: Multiply 3231 by 1 ten                                      tth th H t O
                                       3231 × 1 ten = 3231 tens                                         3   2 3 1

                                                        = 32310 ones                                            1 2
                                                                                                        6   4 6 2
                                                                                             +    3     2   3 1 0
                             Step 4: Add both partial products.                                  tth th H t O

                                                        = 6462 + 32310                                  3   2 3 1

                                                        = 38772.                                            × 1 2
                                                                                                        6   4 6 2
                                                                                             +    3     2   3 1 0
                                                                                                  3     8   7 7 2


                       Practice Time 3B



                Find the product of the following.
                1.  248 × 27               2. 301 × 59                  3. 543 × 18          4. 1495 × 64

                5.  2432 × 58              6. 3046 × 42                 7. 4078 × 37

              Multiplication by a 3-Digit nuMber


              Multiplication of a 3-digit number by a 3-digit number is the same as multiplication
              of a 2-digit number by a 2-digit number.

              Let us multiply 276 by 234.
              Expand the multiplier 234 and start multiplying by using the following steps:

              Step 1: Multiply 276 by the 4 ones.
                        276 × 4 = 1104                                        tth th H t O

              Step 2: Multiply 276 by 3 tens.                                             2 7 6

                        276 × 30 = 8280                                    ×              2 3 4         200 + 30 + 4
              Step 3:  Multiply 276 by 2 hundreds.                                   1    1 0 4         276 × 4

                        276 × 200 = 55200                                            8    2 8 0         276 × 30
              Step 4: Add the partial products.                            +    5    5    2 0 0         276 × 200
                                                                                6
                                                                                     4
                                                                                          5 8 4
                        1104 + 8280 + 55200 = 64584                                                     Product
                        Thus, 276 × 234 = 64584.


              Mathematics-4                                                                                          57
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