Multiplication with 11 was not that easy

We always used the normal way of multiplication while multiplying any number with 11. The former method is like

                 2678 
                     x11

                  2678
               2678x

Now with trick

write a 0 on both the sides of the number

   026780
  (abcdef)

Now starting from the end start adding the two number in the format

(a+b)(b+c)(c+d)(d+e)(e+f)

If the any added number generates a number greater than 9 like 10, 12, 15 carry the number and add it to the to the left. So the answer for 2678*11 with trick format is

   026780
  (abcdef)

(a+b)(b+c)(c+d)(d+e)(e+f)
(0+2)(2+6)(6+7)(7+8)(8+0)

(2)(8)(13)(15)(8)
Now this would be

carrying 1 from 15 and adding to 13 makes it 14

(2)(8)(14)58

carrying 1 from 14 and adding to 8 makes it 9

(2)(9)458

29485

So this is a trick to multiply any number with 11

Try it yourself

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Multiplication with 11 was not that easy - Learn this trick.