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How to Do Percentages on a Casio Calculator OR

# How to Do Percentages on a Casio Calculator

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In the laboratory, we use a Casio calculator to calculate percentages. But what is the percentage of one single number, or how do you calculate how many numbers are in a percentage?

### Percentage

A percentage is a special way of representing a portion of something. A percentage is a number that indicates a fraction made up of 100 parts. Thus, 100% means the whole thing (whatever is being measured), while 50% means one half. If you learn how to write numbers as percentages, it then becomes easy to perform multiplication and other calculations with percentages on a calculator. Some calculators even have a % button that makes the calculation even easier. A percentage is a special way of representing a portion of something. A percentage is a number that indicates a fraction made up of 100 parts. Thus, 100% means the whole thing (whatever is being measured), while 50% means one half. If you learn how to write numbers as percentages, it then becomes easy to perform multiplication and other calculations with percentages on a calculator. Some calculators even have a % button that makes the calculation even easier.

Add percentages very directly. Because percentages all represent fractions with the common denominator of 100, you can add a list of percentages without any additional work. By contrast, remember that to add fractions, you must work through the steps of finding common denominators and converting your fractions to those common denominators. With percentages, however, no additional work is necessary. (Source: www.wikihow.com)

### Calculator

The most inportant thing to remember when calculating percentages is that your calculator works in decimals. Therefore, to find a percentage, you must use either a decimal equivalent or the percentage button to get a correct answer. You could also multiply by 100 if you prefer. This video shows you haw you can calculate percentages using the percentage button or function. This is a second function which you can access by pressing SHIFt and then the left bracket or parentheses "You can easily calculate your total bill including a tip or a tax by adding 1 to the percentage. For example, if you have a \$20 meal and you want to add 15% to the bill, multiply \$20 by 1.15 to get \$23. That's faster than figuring out 15% of \$20, which is \$3, then adding it back to \$20.

Calculate a percentage of a number and add it to the number. For example, enter 34 + 7 and hit the percent key. You immediately see the answer is 36.38. This is useful for figuring sales tax on purchase items. (Source: sciencing.com)

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