Page 55 - Viva
P. 55

Example 1:  Construct the table of 7 by skip counting.


            Solution:       7       14       21       28       35       42       49       56       63      70


                               + 7      + 7      + 7      + 7      + 7      + 7      + 7      + 7      + 7


            Through Grid Patterns
            Look at the grid given alongside. In this, the numbers 1 to 5
            are  written  horizontally  and  vertically,  and  a  multiplication       ×   1    2   3    4   5
            sign (×) is made in the first box of the grid.                            1    1    2   3    4   5

            Let’s see how we can form multiplication tables using this grid           2    2    4   6    8 10
            pattern by skip counting.                                                 3    3    6   9 12 15

            Step 1:  Skip count in 1s and fill the second column.                     4    4    8 12 16 20
            Step 2:  Skip count in 2s and fill the third column.                      5    5 10 15 20 25

            Step 3:  Skip count in 3s and fill the fourth column.

            Step 4:  Skip count in 4s and fill the fifth column.                             Step 1  Step 2  Step 3  Step 4  Step 5
            Step 5:  Skip count in 5s and fill the sixth column.

            Observe that we can construct the tables of 1 to 5 horizontally and vertically in the grid in
            this manner. Similarly, we can form any table through grid patterns.


            By Adding 1 to 10
            Let’s learn how to write multiplication table of 6 by a simple method of adding 1 to 10.

            Step 1:  First write the table of 5.
            Step 2:  Now add 1 to 10 stepwise in the table of 5 to get the table of 6.

                                      Table of 5                              Table of 6

                                           5         +        1          =         6

                                          10         +        2          =       12
                                          15         +        3          =       18

                                          20         +        4          =       24
                                          25         +        5          =       30

                                          30         +        6          =       36
                                          35         +        7          =       42

                                          40         +        8          =       48
                                          45         +        9          =       54

                                          50         +       10          =       60
            Using this method, we can write multiplication table of any number if we know the table
            of the previous number.

                                                                                                                 45
   50   51   52   53   54   55   56   57   58   59   60