What is an easy way to do 11 times table?

Answer 1

For one digit numbers, you take the digit and write it down twice. So 11 times 5 would equal 55, and 11 times 7 would be 77.

Now here is an easy way to multiply 11 by two-digit numbers. For example, 63x11=? First add the digits of the number being multiplied by 11. In this case, adding the digits (6+3=9) gives you 9. Then place the sum of the digits (nine) between the digits, and you get 693. If it is something like 59x11 where you get a two-digit sum, you would still add the digits (5+9=14), but you would put the last number in the middle and carry what is left. So the 4 in the middle and add the 1 to the left end column. 59x11= 649. Simple, but effective.