My classroom has 11 rows of chairs, with 11 chairs in each row.  The chairs in each row are numbered from 1 to 11.  How many chairs have odd numbers?
To count the odd-numbered chairs, I need to know how many odd numbers there are in each row and how many rows there are. In each row, there are 6 odd numbers: 1, 3, 5, 7, 9, and 11. There are 11 rows, so the total number of odd-numbered chairs is 6 times 11, which is 66. 