Here , Is Something I found Interesting….
You May Think it is Simple … What Great in it?
● Step1 :-Spread your two hands out and place them on a desk or table in front of you.
● Step 2:– To multiply by 7 , fold down the 7th finger from the left. To multiply by 3, it would be the 3rd finger , similarly for others
Step 3 :-Result is 63 …
READ it from the 6 fingers on the left of the folded down finger and the 3 fingers on the right of it.
Now if u need to multiply any number between 1 to 20 by 9.
Let’s look at an example to understand.
13 ×9 =?
First of we will reduce the problem as follows.
Step 1 :- 10 ×9
Close the 10th finger and count the no of fingers on left of folded finger and no of fingers on right of folded finger we get 9/0 =90
Step 2 :- Now we need to get 3 ×9 =?
Follow the step 1 similarly , we get 2 /7
Step 3 :- Add the two partitioned numbers we get as
Therefore ,13×9 =117.
It is interesting!!!
Some Might Say It is not useful…It just one method to compute..Hope u liked It..!
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Posted by Praveenkumar P K