Multiplying by 11

 MULTIPLY any number BY 11 - Find the answer in seconds

To multiply any number by 11 do the following:
Working from right to left

1. Write the rightmost digit of the starting number down.
2. Add each pair of digits and write the results down, (carrying digits where necessary right to left).
3. Finally write down the left most digit (adding any final carry if necessary).
   

It's as simple as that, e.g.

• Multiply 712x11
  

Digit1        Digit2         Digit3           Digit4

7             7+1            1+2               2

first no.     Sum of        Sum of            Last no.

               I and II      II & III 

So it is  712x11=7832

Another Example 

Multiply 8738x11

8   8+7     7+3   3+8    8

8    15      10    11    8 ( Now let us carry over the sum,

                              since we are getting 2 digits in the sum)

9    6        1    1    8  So the answer is 

 8738x11=96118

Is in it Simple ?

Try with other nos and see........