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Wednesday, December 7, 2011

Easy Maths and Calculation Secrets Simplified Example By Example part-1

tip- 1


Use the formula ALL FROM 9 AND THE LAST FROM 10 to
perform instant subtractions.
For example 1000 - 357 = 643
We simply take each figure in 357 from 9 and the last figure from 10


Simplified understanding :  subtracting from 999 is easy and later add 1 to keep balance

1000-357= 999-357+1= 642+1=653     

this is easy and comprehensive way to remember 


you can pick 9999 for 10000  ,19999 for 20000  and even 399999999 for 4000000000


it is easy just try to understand...


other variations


if have to subtract  987- 392 then 


{it is called mathematical common sense }


987-392 = 992-392-5=600-5=595 


or


987-392= 999-392-12 = 607-12= 607-7-5=595


or


987-392= 987-400+8= 587+8=595


In dynamic mode,you can do it in fraction of seconds but 


you need some smart practice( practice with observation)


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