Scientific American presents Math Dude by Quick & Dirty Tips. Scientific American and Quick & Dirty Tips are both Macmillan companies. Long time math fans may remember our first foray into the world ...

In the course of running your business, you may find it necessary to perform calculations where you need to combine percents. Percents can be added directly together if they are taken from the same ...

This post explains how to calculate Weighted Average in Excel with percentages. In a standard arithmetic average where the sum of values is divided by the number of values, each data value is treated ...

For anyone who is interested in analyzing and assessing a company's performance, calculating percentages of total revenues -- or using the percentages that have been calculated for you -- can be very ...

In real life there are many scenarios where we calculate percentages in our minds, for example the amount of discount on goods, tips at restaurants and many more. Have you wondered, if you could ...

What can be said about math riddles? Everyone in the world has a love-hate relationship with them. You can hate math, but you have to accept that it is vital in our day-to-day lives. The world cannot ...

How to calculate percentages is easier than you think. Quick, what’s 36% of 25? Or how about 250% of 20? Learn a quick and dirty tip to help you calculate all of those pesky percentages in your head.

One way to find a percentage of an amount is to use 1%, 10% and 50% as building blocks. 1%, 10% and 50% can be used as building blocks for working out percentages in your head. 1% is 1⁄100. Work out 1 ...