Question about Casio FX-115ES Scientific Calculator

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To convert a single value, press the S<>D key. To have all answers come out in decimals, press 2nd MODE 2 to select LineIO.

Posted on Aug 23, 2010

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Posted on Jan 02, 2017

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To find percentages on this calculator, or any calculator, you divide one number by the other, and multiply the result by 100.

For example, for 2 out of 5, we type in 2, hit the divide button, type in 5 and hit the equals sign and we will get 0.4. To make this into percentage, we then multiply the answer by 100 to get 40%.

Good luck,

Paul

For example, for 2 out of 5, we type in 2, hit the divide button, type in 5 and hit the equals sign and we will get 0.4. To make this into percentage, we then multiply the answer by 100 to get 40%.

Good luck,

Paul

Oct 27, 2016 | Staples Office Equipment & Supplies

small number divided by big number multiplied by 100 = %

example what % is 25 of 150

25 divided by 150 multi[plied by 100= 16.3 % approx or on your calculator-- small number divided by big number then % button

example what % is 25 of 150

25 divided by 150 multi[plied by 100= 16.3 % approx or on your calculator-- small number divided by big number then % button

Mar 14, 2016 | Office Equipment & Supplies

Use this http://www.calculatorsoup.com/calculators/math/percent-to-fraction-calculator.php

**OR** to work it out yourself.....#

### How to convert percent to fraction

1% = 1/100

So in order to convert percent to fraction, divide the percent by 100% and reduce the fraction.

For example 56% is equal to 56/100 with gcd=4 is equal to 14/25:

56% = 56/100 = 14/25

- Divide the percent by 100 to get decimal number.
- Count the number of digits (d) to the right of the decimal point of the decimal number.Example: 2.56 has 2 digits to the right of the decimal point, so d=2.
- Calculate the factor (f) for making the decimal number an integer:
*f*= 10*to power d*

Example:

*f*= 10 power 2 = 100

- Multiply and divide the decimal number x by the factor f:
*x***f*/*f*=*y*/*f*

Example:

2.56 * 100 / 100 = 256 / 100

- Find the greatest common divisor (gcd) of the fraction.
Example:

gcd(256,100) = 4

- Reduce the fraction by dividing the numerator and denominator by the gcd value:
Example:

256 / 100 = (256/4) / (100/4) = 64/25

1% = 1/100

So in order to convert percent to fraction, divide the percent by 100% and reduce the fraction.

For example 56% is equal to 56/100 with gcd=4 is equal to 14/25:

56% = 56/100 = 14/25

Sep 07, 2014 | Office Equipment & Supplies

It will usually only be an approximation when you do that. Take sqrt 3 for example, 1.7320508.......the decimals go on and on.

So we usually write 1.7321 or some other rounding off. This means 1 and 7321/10000 which does not divide exactly, so you would have to fudge again, say 1 and 732/1000 or 1 and 73/100, which is not the true answer.

Occasionally you get lucky like sqrt 18.0625 = 4.25 = 4 25/100

which is 4 1/4 exactly.

So we usually write 1.7321 or some other rounding off. This means 1 and 7321/10000 which does not divide exactly, so you would have to fudge again, say 1 and 732/1000 or 1 and 73/100, which is not the true answer.

Occasionally you get lucky like sqrt 18.0625 = 4.25 = 4 25/100

which is 4 1/4 exactly.

Dec 18, 2013 | Sharp El-531x Scientific Calculator Green...

Divide by 100. For example, to change 50% to decimal, divide 50 by 100 and get 0.5 .

Mar 21, 2013 | Office Equipment & Supplies

The TI-84 is limited to numbers with at most twelve significant digits.

If you must know the EXACT value of 16!, try this. Calculate 14!. Note the two zeroes at the end. Strip them off by dividing by 100 and remember the two zeroes. Multiply by 15. Strip off the last zero by dividing by 10 and remember that we've now stripped off three zeroes. Multiply by 16. Add the three zeroes at the end to get a fourteen-digit number.

In this particular case the result is exactly what you get by using the FACT function. That's also true for 17!, but it breaks down past that because 18! has more than twelve significant digits.

The whole point of the calculator is to allow you to do calculations with a reasonable degree of accuracy, as opposed to exactly. You'll notice that it can't do a simple operation like dividing 1 by 3 and produce an EXACT answer---only a twelve-digit approximation.

If you must know the EXACT value of 16!, try this. Calculate 14!. Note the two zeroes at the end. Strip them off by dividing by 100 and remember the two zeroes. Multiply by 15. Strip off the last zero by dividing by 10 and remember that we've now stripped off three zeroes. Multiply by 16. Add the three zeroes at the end to get a fourteen-digit number.

In this particular case the result is exactly what you get by using the FACT function. That's also true for 17!, but it breaks down past that because 18! has more than twelve significant digits.

The whole point of the calculator is to allow you to do calculations with a reasonable degree of accuracy, as opposed to exactly. You'll notice that it can't do a simple operation like dividing 1 by 3 and produce an EXACT answer---only a twelve-digit approximation.

Oct 03, 2012 | Texas Instruments TI84Plus Graphic...

Divide by 100. For example, take 40%. Divide 40 by 100 and get 0.40 .

Jul 29, 2012 | Casio FX-115MS Plus Calculator

Divide .332 by .233, multiply by 100, then subtract 100.

Alternatively, since the increase in price was .099, divide .099 by .233 then multiply by 100.

Alternatively, since the increase in price was .099, divide .099 by .233 then multiply by 100.

Aug 10, 2011 | Texas Instruments TI-84 Plus Calculator

There is no percentage button. To turn your answer into a percentage, simply divide by 100. To find, for example, 64% of 200, type in .64*100.

Feb 27, 2011 | Texas Instruments TI-82 Calculator

Answers show in an unexpected (by you) format, but they are correct and in conformity with the MODE settings of the calculator.

If you want to have the results displayed as decimal numbers,

If you want to have the results displayed as decimal numbers,

- open the HOME screen.
- Press MODE to open the Mode configuration.
- Press F2 or use the DownArrow to reach the second page of settings.
- Move Cursor to highlight the option at the right of EXACT/APPROX.
- Use the right arrow to unfold the menu and select 3:APPROXIMATE.
- Press ENTER to Save the changes.

Mar 22, 2010 | Texas Instruments TI-89 Calculator

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