10 simple mathematical tricks

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.

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Multiplication of large numbers in ume





How to learn the multiplication table on 9





Method butterflies for addition and subtraction drobey





Multiply by 11 (for example, number 32)





How to recall the number of Pi





Multiplication Table 6, 7, 8, 9 on your rukah





How to find the percentage of chisla





How to find a fraction of the whole chisla





Translation degrees Fahrenheit to degrees Tselsiyu







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