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10 simple mathematical tricks
![](http://bashny.net/uploads/images/00/00/44/2015/09/17/fbe05e92e5.jpg)
Such a school we were not taught. What a pity! If you are all bad at math - it's not your fault. We were just not taught in school mathematical trick with which any calculations are elementary.
Website publishing methods by which you can easily count in mind.
Multiplication of large numbers in ume
![](http://bashny.net/uploads/images/00/00/44/2015/09/17/70a92389ab.jpg)
How to learn the multiplication table on 9
![](http://bashny.net/uploads/images/00/00/44/2015/09/17/4236d01646.jpg)
Method butterflies for addition and subtraction drobey
![](http://bashny.net/uploads/images/00/00/44/2015/09/17/e171f24e7c.jpg)
Multiply by 11 (for example, number 32)
![](http://bashny.net/uploads/images/00/00/44/2015/09/17/f9dfd70a08.jpg)
How to recall the number of Pi
![](http://bashny.net/uploads/images/00/00/44/2015/09/17/557358bbef.jpg)
Multiplication Table 6, 7, 8, 9 on your rukah
![](http://bashny.net/uploads/images/00/00/44/2015/09/17/e0032ddc95.jpg)
How to find the percentage of chisla
![](http://bashny.net/uploads/images/00/00/44/2015/09/17/b980ff4ac6.jpg)
How to find a fraction of the whole chisla
![](http://bashny.net/uploads/images/00/00/44/2015/09/17/d74ec159c8.jpg)
Translation degrees Fahrenheit to degrees Tselsiyu
![](http://bashny.net/uploads/images/00/00/44/2015/09/17/c5607ad6fc.jpg)
via # image12391360