Page 2 - PPT 5
P. 2

Multiplication of 2 digit no by a 2 digit no




                    Without regrouping




                     • Multiply 12 by 11.




                          H            T            O               Step-1 Multiply with ones


                                                                        12 x  1 one = 12 x 1 = 12 (Write in row 1)
                                        1            2

                                                                    Step-2               Multiply with tens

                           x            1            1
                                                                   12 x 1 ten = 12x 10 = 120 ( Write in row 2)

                                        1            2              Step-3 Add row 1 and row 2 together



                        + 1             2            0                    12 + 120 = 132


                        = 1             3            2

                                                                Thus, 12 x 11 = 132
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