Question about Casio FX-115ES Scientific Calculator

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How can i change this option for my calculator: when i divide 100/3 it just answers me like this 100/3, another example is 300/7 it answers me just like i typed it, 300/7 by the way my calculator is the casio fx-115 ES

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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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Staples scientific calculator BD-107i

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,


Oct 27, 2016 | Staples Office Equipment & Supplies

1 Answer

How do i calculate percentage

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

Mar 14, 2016 | Office Equipment & Supplies

2 Answers

How do I change a percentage to a fraction

Use this
OR to work it out yourself.....#

How to convert percent to fraction

  1. Divide the percent by 100 to get decimal number.
  2. 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.
  3. Calculate the factor (f) for making the decimal number an integer: f = 10 to power d
    f = 10 power 2 = 100
  4. Multiply and divide the decimal number x by the factor f: x * f / f = y / f
    2.56 * 100 / 100 = 256 / 100
  5. Find the greatest common divisor (gcd) of the fraction. Example:
    gcd(256,100) = 4
  6. Reduce the fraction by dividing the numerator and denominator by the gcd value: Example:
    256 / 100 = (256/4) / (100/4) = 64/25
Example One percent is equal to one hundredth:
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

1 Answer

Change square root answer to fractions

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.

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

1 Answer

Change a % to decimal

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

Mar 21, 2013 | Office Equipment & Supplies

1 Answer

Large factorials ti84

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.

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

1 Answer

Converet precent to decimal

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

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

1 Answer

What is the formula to find the percent between two numbers. example: nuts cost .233 last year and this year nuts increased to .332 what is the percentage increase.

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.

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

1 Answer

Where is the percentage button

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

1 Answer

When I divide, answers show up wrong.

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

Mar 22, 2010 | Texas Instruments TI-89 Calculator

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