Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 54 - Touchpad Mathematics_Ver1.0_C4
P. 54

    E:\Working\Orange_Education\TouchPad_Maths_4\Open_Files\Chap_03\Chap_03
                 \ 10-Nov-2025  Bharat Arora   Proof-8                                     Reader’s Sign _______________________ Date __________

                lATTiCE MulTiPliCATion

                Finding the product using the lattice multiplication method is fun! It is a very interesting
                method.

                Multiplying by a 1-digit number

                Example 1. Find 73 × 4 using the lattice multiplication method.

                Solution.

                Step 1.  Write the two numbers in the                  Step 2.  Draw the diagonal of each cell
                           form of a table as shown.                             as shown.

                               7         3            Multiplicand                            7         3

                                               4     Multiplier                                               4

                Step 3.  Multiply 3 by 4, and write the                Step 4.  Multiply 7 by 4, and write the
                           product in the lattice below 3                        product in the lattice below 7
                           as shown.                                             as shown.

                                       7         3                                            7         3
                                               1        4                                   2         1       4

                                                   2                                            8        2

                Step 5.  Add the digits along the diagonals as shown.                         7         3
                           The answer is read from left to right.                           2         1
                           Product = 292                                             2           8       2    4

                Therefore, 73 × 4 = 292.                                                    9       2

                Example 2.  Find 143 × 7 using the lattice multiplication method.
                                     1         4        3

                Solution.          0         2         2        7

                             1           7       8         1                                      Use regrouping while
                                    0       0        1                                              adding the digits.
                Therefore, 143 × 7 = 1001.
                Example 3.  Find 2436 × 5 using the lattice multiplication method.

                                     2         4        3         6

                Solution.          1         2         1        3        5

                             1          0        0         5        0
                                    2        1        8         0
                Therefore, 2436 × 5 = 12180.

                        52       Mathematics 4

| 49 50 51 52 53 54 55 56 57 58 59 |