How to Use the Multiplication Table
By Stephen Bucaro
x  2  3  4  5  6  7  8  9 
2  4  6  8  10  12  14  16  18 
3  6  9  12  15  18  21  24  27 
4  8  12  16  20  24  28  32  36 
5  10  15  20  25  30  35  40  45 
6  12  18  24  30  36  42  48  54 
7  14  21  28  35  42  49  56  63 
8  16  24  32  40  48  56  64  72 
9  18  27  36  45  54  63  72  81 
The multiplication table is useful when learning basic math, fractions, and
factoring polynomials. The way to use the multiplication table is not to look
at the table while solving a math problem, but to memorize the table.
Problems involving addition or subtraction of fractions, or factoring polynomials
can be solved almost intuitively if you have the multiplication table memorized.
In this case the you would actually be using the multiplication table as a division table.
Some multiplication tables have a larger range of numbers, but you don't
want to memorize a very large table of numbers. This multiplication table goes
from 2 to 9. You don't need 0 in a multiplication table because 0 times any
number is 0. You don't need 1 in a multiplication table because 1 times any
number is that number.
You don't need 10 in a multiplication table because 10 times any number is
that number moved to the ten's place with a zero in the one's place. You don't
need 11 in a multiplication table because 11 times any number is that number
moved to the ten's place, with that number also in the one's place. For example
11 times 8 is 88.
If you're dealing with numbers requiring factoring numbers higher than 81,
you are working at ta higher level of mathematics which requires knowing how
to find common factors and primes factors of large numbers.
