There are many ways we use percentages in real life. The next time you go shopping, just check out the sale signs that say "30% off" or "50% off the lowest ticketed price" and you'll see just one of them. Knowing how to calculate percentages will allow you to determine the price of these items on sale. Once you get to the till to pay for the items, you will be charged sales tax, a fixed percentage of the price of the items. This is a very common use of percentages in real life.
Have a look at the food labels on something like juice or milk and see where it says "Percentage of recommended daily intake" for a certain portion or serving size. If you can calculate percentages you can determine how much of the food you need to eat or drink in order to get the full, or 100%, recommended daily intake. Another dietary consideration is fat intake and often foods will come saying only a certain percentage of calories come from fat.
Income tax that people pay on their earnings is a percentage of those earnings.
These are just a few ways we use percentages in real life, perhaps now you can think of a few of your own. :p
Safety In Numbers Mathematician Marcus du Sautoy reveals how the language of maths is used to construct the complex codes that we encounter in everyday life. Learn about the amazing use of PRIME NUMBERS in our everyday life.
Zero to InfinityIn this programme, mathematician Marcus du Sautoy explains how humans have developed numbers for their mathematical needs. Hear about the Invention of Zero and have a better understanding of Infinity. Can we divide a number by Zero? Is Infinity the biggest number? (http://www.teachers.tv/video/3500)
Source: The Guardian (Guardian.co.uk), 4 March 2005
Article: The Magic Number by Simon Singh
Found!!! The biggest Prime Number yet...
Click HERE to read article.
This video clip, Statistics: Decisions Through Data shows how data (in the study of Statistics) has enabled mankind to make big and small decisions, that either impact the individuals or the bigger community.
This video about... There are more than 350 different commodities grown in California. In a state that provides approximately 15 percent of U.S. agricultural products, statistics are an important tool for agricultural economists to keep up with supply and demand. Let's hear how the statistics help farmers to make decisions!