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If you have issues with math, it’s not your fault. The problem
is that nobody taught you the most useful math tricks in school.

__Bright__**Side**put together the best tricks that will help you count easily and quickly. With these, any kind of calculation will be easy as pie.**The easy percent of a number**

**Quick square calculation**

This trick will help you find the square root
of a two-digit number that ends with a five. Multiply the first
digit by itself and add 1 to it. Then write 25. That’s it!

**Multiplication by 9 made easy**

**Quick multiplication by 5**

Divide a given number by 2. If the result is a whole number, add 0 at the end. If the result is not a whole number, ignore the decimal and just add 5 at the end.

**Easy multiplication by 11**

**Simple multiplication by 4**

The trick here is to multiply your number by 2, and then multiply it by 2 again.

**A simply way to calculate tips**

If you need to leave 15% of your order as tips, there is a simple way to find how much you need to give. First, find 10% of your sum (divide your sum by 10), and then add another half of the result. That’s your tip.

**Difficult multiplication made easy**

If you need to multiply large numbers while one of them is even, you can simply regroup them to get an answer.

**Subtracting from 1,000**

There’s a simple rule for subtraction from 1,000: just subtract all the digits from 9, and the last digit from 10.

**Converting from Celsius to Fahrenheit and back**

**Easily calculate a cube root**

This post was written by Usman Abrar. To contact the
writer write to iamusamn93@gmail.com.
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