We all know that when multiplied by a permutation of the factors does not change the result. If somewhere sometime mathematics will tell you otherwise, do not believe them - they are wrong. Simple math multiplication like to call it, that in fact is not a multiplication. For example, if we call a cow "Multiplication", it then becomes to turn milk and poop in the hay. After all, the cow to the mathematical action has nothing to do.

So, I always use the following equation:

**9*7 = 7*9**

Next is quite simple. That number, which must be multiplied by 9, I multiply by 10 and take away his once:

**7*9 = 7*10-7 = 70-7 = 63**

Multiplied by 10 is very simple - have added to the number of the toe and the result is ready. Subtract this number from a small number of possible even without a calculator. Now you can easily cope with any stitch multiplication table 9.

For example, if we need to multiply 9 by 9, proceed as follows:

**9*9 = 90-9 = 81**

If needed multiply 9 by 3:

**9*3 = 3*9 = 30-3 = 27**

In all these transformations have no miracles, we just use the normal math.

9 multiply |

My personal opinion is: better to use the thinking abilities of their brain than clog the brain remembering any nonsense. Even if this nonsense forced to learn mathematics.

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