So from a long period I am trying to find a nice book which can be easily understand by my children. Luckily today when I am looking for a book in the library I find a really useful one written by Vandana Singhal. Thanks to her for such a nice book.
Whatever I read for today I am posting, hoping it will be useful to your child also.
The vedic math starts with understanding the word complement.
Any number when subtracted from its nearest base will give its complement.
10-7=3
Here 3 is called the complement of 7.
100-93=7
Here 7 is the complement of 93.
If number is having more digits it again become difficult to complement. For this there is a rule (sutra) in vedic maths.
All from 9 and last from 10
It is very easy to understand if you do some examples.
ex. complement of 753:
instead of subtracting 753 from 1000 we can use the above sutra.
Starting from right:
753 1. subtract 3 from 10 (as 3 is the last digit)
-----
7 10-3=7
753 2. subtract 5 from 9 (as 5 is not the last digit)
------
47 9-5=4
753 3.subtract 7 from 9 (as all the digits, except the last digit have to ---- subtracted from 9)
247 9-7=2
Therefore complement of 753=247
ex. complement of 7532:
7532 10-2=8
------ 9-3=6
2468 9-5=4
9-7=2
Therefore complement of 7532=2468
ex. complement of 70853:
70853 10-3=7
-------- 9-5=4
29147 9-8=1
9-0=9
9-7=2
Therefore complement of 70853=29147
If the number ends with 0 then we just write 0 as the last digit of complement also. we take the next digit from right as the last digit and subtract it from 10. All the other digits have to be subtracted from 9.
ex. complement of 4310:
4310 0=0
------- 10-1=9
5690 9-3=6
9-4=5
Therefore complement of 4310=5690.
practice as many as possible to get perfection in complements before moving into next topic SUBTRACTION.
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