This post includes the easiest way making multiplication and number with 11. Look at the image given below. I’m going to multiply 12 x 11. How to do this with easiest way in our mind.
Put to digit 1 and 2 at the location given image 1 and 2. And make the sum for intermediate value.Make the sum of both numbers 1+2 = 3. Put the value 3 in between them. That is your answer. Don’t you think making multiplication with 11 is easiest than any other. Look at the other example given below which show how to handle carry.