Page 98 - Maths Class 02
P. 98

Multiplication of a 2-Digit numbers by 1-Digit Numbers


            Without Regrouping

            Example : Multiply 167 by 3.                                                                 H   T   O

            Step 1 :  Write the numbers in columns.                                                       1   6    7

            Step 2 :  Multiply 7 one by 3 ones.                                                           x         3

                          3 x 7 = 21

                                  = 2 tens + 1 one

                          We can take 1 at the ones place and                                            H   T   O

                          2 at the tens place.                                                                2

                                                                                                          1   6    7
            Step 3 :  Now, multiply 6 by 3.
                                                                                                          x         3
                          3 x 6 = 1 8
                                                                                                                   1
                                  +  2          (Carried from ones)

                                     2 0 tens = 2 hundreds

                          Write 3 under the tens column.

            Step 4 :  Now, the 2 at the hundreds place.

                          i.e.
                                           H   T   O

                                             2   2
                                            1   6    7

                                            x         3
                                                 0   1





            Step 5 :  Now, multiply 1 by 3.

                          3 × 1  =  1    3
                                                                                                        H   T   O
                                         +   2 (Carried from tens.)                                       2   2

                                          1  5                                                           1   6    7

                                                                                                         x         3

                                                                                                           5  0   1
                          \ 1 6 7  × 3 = 501







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