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In the last article, we applied our knowledge of fractions to begin making sense of percentages, and we used this new tool to quickly and easily calculate how much to tip at restaurants…all in our heads! Today, we’re continuing our exploration of percentages by using the power of 10% to quickly calculate how much money you’ll save the next time you go shopping for sales.


In this unit tasks and activities highlight terms and concepts associated with money and percentages. Money and percentages are explored in a variety of real life contexts. This unit is concerned with applications of percentages more than learning how to calculate percentages. For a unit on calculating percentages try Getting Percentible.


Suppose the price had been $199.95 and is now $249.95 (199.95:249.95), what is the percent increase? Use Percentage Calculator 4; Why do the above two calculations have different results? Notice ratios need not have only integer (whole number) parts. Frequently, many people need to do percentage calculations involving money, as we see above.


For example, you may know that 40 percent of your paycheck will go to taxes and you want to find out how much money that is. To calculate the percentage of a specific number, you first convert the percentage number to a decimal. This process is the reverse of what you did earlier. You divide your percentage by 100.


Percentage Calculator. Percentage Calculator is a free online tool to calculate percentages. What is % of ? % is what percent of ? % What is the percentage increase/decrease from to ? % Tips: Use tab to move to the next field. Use shift-tab to move to the previous field. Press enter to calculate.


Learn how to use the power of ten percent, and not your calculator, to easily and quickly calculate how much to tip. By . Jason Marshall, PhD, The Math Dude. May 27, 2011. Episode #012. How to Use Percentages to Easily Calculate Tips. A few articles ago, I asked if you ever found ... How to Use Money to Understand Percentages.


Viewing data in the form of percents helps you quickly evaluate what portion of a whole you are dealing with. Many areas of personal finance express data in percents, including interest rates, taxes and portions of your budget. Use simple calculations to convert raw data into percentages, and to use percentages to calculate pieces of raw data.


Knowing how to calculate percentages will help you not only score well on a math test but in the real world as well. They are used for calculating tips in restaurants, finding out the nutritional content of your food, or even determining statistics of your favorite sports team.


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