There is a easy way to get the multiplication with 11.
suppose if any one ask you 53*11
then what you will do?
You will multiply that is
53
53*
____
583
_____ This is the final result.
but this may take some time to calculate.
So we can use a trick to calculate this with in a second.
53*11= 5+3=8 so place this 8 between 5 and 3 that is 583 there for the answer is 583
This is known as MATHMAGIC
If the calculation with 3 digit number
then 583*11= 5+3=8
Now place this 8 in between 5 and 3
that is 5883
5(58 8+3)3
5(5(8+1)1)3
5(591)3
5(5+9)13
5(14)13
(5+1)413
6413
very simple. Just try it.
I hope you understood.
If you didnt understand anything please let me know
20 Replies
Thank you Saralaji for your kindness.Here are something:-
1.A number is divisible by 2 with ending any even number or 0.
2.A number is divisible by 3 if the total of numbers is divisible by 3.
3.A number is divisible by 4 if the last two digit is divisible by 4 or ending with00.
4.A number is divisible by 5 if the last digit is 0 or 5.
5.A number is divisible by 6 if the nuber is divisible by 2 and 3.
Share some more continue please.
1.A number is divisible by 2 with ending any even number or 0.
2.A number is divisible by 3 if the total of numbers is divisible by 3.
3.A number is divisible by 4 if the last two digit is divisible by 4 or ending with00.
4.A number is divisible by 5 if the last digit is 0 or 5.
5.A number is divisible by 6 if the nuber is divisible by 2 and 3.
Share some more continue please.
There is another magic with eleven. The total of digits first, third, five and so on will equal that from second, fourth, sixth digit etc, when the figure is divisible by eleven. So, if you want to know whether a number is divisible by eleven, just total as above.
Thus 121 the first and third digit equal the second. In 132, also the same. In 1320, 0+3 = 2+1. Hence, divisible by eleven. You may check even very large number.
Thus 121 the first and third digit equal the second. In 132, also the same. In 1320, 0+3 = 2+1. Hence, divisible by eleven. You may check even very large number.
Abid how is your project work how many days it will take still to continue you full time here.
Actually today I forgot to take my mobile and am not able to open my mailbox also.That is why am here active!!! :cheer: :cheer: :cheer: :cheer: :cheer: :cheer: else I will be busy due to calls and replies.Hope by next month I will be free to have more hours here.
Hey sarala
I think your trick is applicable to few numbers only not for all because I tried 67*11= 737 but by your trick answer is 6137 which is wrong so can you please explain why is it so?
__________________________
Is -100 a Rational Number
I think your trick is applicable to few numbers only not for all because I tried 67*11= 737 but by your trick answer is 6137 which is wrong so can you please explain why is it so?
__________________________
Is -100 a Rational Number
Hey sarala
I think your trick is applicable to few numbers only not for all because I tried 67*11= 737 but by your trick answer is 6137 which is wrong so can you please explain why is it so?
__________________________
Is -100 a Rational Number
Sarala is nowadays absent in forum :(
sasikanth
53*11 = 5(5+3)3 = 583
583*11 = is bit tough
So this is the method =
5(58 8+3)3
5(5(8+1)1)3
5(591)3
5(5+9)13
5(14)13
(5+1)413
6413
think again if you still did not understand then again you keep a forum then i will explain
The second method is difficult . Instead of this it is better to multiply by 11 .
Hey sarala
I think your trick is applicable to few numbers only not for all because I tried 67*11= 737 but by your trick answer is 6137 which is wrong so can you please explain why is it so?
__________________________
Is -100 a Rational Number
In this case the calculation will be as follows
The added number is 13
write down the 3 and add the remaining 1 to next number.
(6+1)37=737
Topic Author
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sarala
@sarala
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Created
Saturday, 13 August 2011 17:13
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Tuesday, 30 November -0001 00:00
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