Multiply any number by 11 in 3 seconds!! mental math trick
This technique teaches you how to multiply any number by eleven, easily and quickly. We will take a few examples and from these you will see the pattern used and also how easily they are to do. So, to begin let's try 12 times 11 . First things first you will ignore the 11 for the moment and concentrate on the 12. 1.Split the twelve apart, like so : 1+2 2.Add these two digits together 1+2 = 3 3.Place the number 3 in between the 12 to give 132 11x 12 = 132 Let's try another 48 x 11 Again, leave the 11 alone for a moment and work with the 48 4+8=12 So now we have to put the 12 in between and 8, but don't do this: 4128 as that is wrong First, do this: place the 2 from the twelve between the 4 and 8 giving 428. Now we need to input the 1 from the twelve into our answer also, and to do this just add the one from 12 to the 4 of 428 giving 528! Example 3) 65 x 11 Step 1:As mentioned above in the first step, focus on 65. Split the number like this, 6 5 Step 2: Now add t...