-_-_-Math Tricks-_-_-

[seham Dokhekh]

This is some Math tricks or the essay way to multiply and find the squares for long numbers quickly …


First: how to multiply tow long numbers?



Can you find out this equation (in 3 socs ):



As usual, you will be using this method (the harder way) and it will take more than 20 secs:





Now, look how to find out it with the smartest way:



1. Add 13 + 2 and but the answer...



2. Multiply 3*2 and but it Next to the previous answer, and look you will find the same answer for the equation…


Ok, let's try other example and be carefully in this time:




-Add this tow to the sixteen 2+16=18



Now we multiply 6*2 =12 right? , and you know twelve is two digit number and we have one place in the answer…



In this case, we but two and the one over eight…




Then you add 1+8 and the finally answer is 192 right?

Try this way of mutably with other number and you will get the right answer.












Second: how to find the squares near 100?




Can youout this equation (in5 socs ):

Also here you well use the harder way and multiply 104*104 right??



This is the answer.



Ok, let's find the answer again but with the smartest way:




First: but the same number between the brackets, except the four multiply it by the exponent tow 4*2 and but 108.




Second: find the four Squares and but it next to the last answer, and you will get the same answer for the hardest way…



Let's take other example and also here be carefully:






Here also, multiply 12*2=24 and but it with the hundred…




Now like before, square 12 =144, but the one over four and write 44 next to the last answer…




Now , add 1+4 to find the final answer 12544.


I think that was easy, and help you to calculate fast..




Thank you...
.Seham Dokhekh.