Multiplying Two-digit Numbers By 11 - Math Multiplication Trick

This math multiplication trick helps you to multiply any two digit number by 11 easily and quickly.

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Example 1:
Let us take the example of *12 11**

Step 1:
In the first step, let us focus on 12.
Split the number 12 like this,1-------2

Step 2:
Now add the two digits of 12
That is1+2=3

Step 3:
Place 3 in the middle of the two digits of 12 and the result is 132
Now, we have arrived at the answer for 12*11=132.

Example 2:
Now let us take another example.65 * 11

Step 1:
As mentioned above in the first step, focus on 65.
Split the number 65 like this,6-------5

Step 2:
Now add the two digits of 65
That is6+5=11

Step 3:
However, we cannot place 11 in the middle of the two digits of 65.Write 1 in between 6 and 5. Carry over the remaining 1 to the previous number 6 as given below.

Add the 1 with 6 to get the digit in the hundredth place.
We have arrived at the answer for 65*11=715.

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Multiplying Numbers By 11 is made easier with this Math Multiplication Trick