Multiplication by 11
To understand the multiplication by 11 trick,
take a look at the following multiplication below: ((image .... ))
Did you make the following two important observations?
First, notice that the digits of the number that is multiplied by 11 appear again in the answer
Second, the number in the middle of the answer is always found by adding the digits of the number that is multiplied by 11
This is the basic facts that you have to remember to quickly multiply numbers by 11
Therefore, if you want to use this trick, all you have to do is add the digits of the number and put the answer between the number
Other examples
1)35 × 11
Just add 3 and 5 to get 8
Put 8 between 3 and 5
The answer is 385
BY: SUMIT BHADRA
No comments:
Post a Comment