Question about Casio MS-80TE Calculator

3 Answers

Percentage Key How do I get the percentage key to work? Ex: I want to add 15% to a certain number... on other calculators I can just enter 45+15% (and hit the percentage key). This doesn't seem to be working for me. Is there a way to set this?

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  • Anonymous Nov 16, 2007

    I have the same problem with casio hs-85te :o(

  • nubian25 Mar 13, 2008

    R329.00 / 30%=

  • Anonymous Mar 25, 2014

    trouble with keys - non functional.

  • Anonymous Mar 31, 2014

    In a house that is 1478 square feet, what percentage is a 13.5 by 12.7 room?



3 Answers

Type in 45, then type X15%, then type + and that should give you your answer

Posted on Feb 01, 2008

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Try inputing the _____ press %, then + key for ____ value ,now % for answer.
works on my MS-80TE

Posted on Jan 23, 2008


I've been searching for the solution to this problem, as well. Apperently, there's no user's manual for this calculator. I'm going to call Casio on Monday to see if they can send me some sort of instructions. (800)962-2746 or (609)395-0154

good luck!!

Posted on Nov 04, 2007

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1 Answer

Wha is a percentage number of another of another

Hmmm. Could you give more details? Are you wanting to find a percentage? If so, here's an example - 10% of 100 is 10.
Multiply 100 by .10 = 10.

So to find the percentage of a number, multiply the number in question by the decimal version of the percentage. 8% is .08, 15% is .15, etc.

I hope that helps!

Jul 08, 2014 | Texas Instruments TI-83 Plus Calculator

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Where is the percentage button?

You can try pressing "alpha" or "2nd" and then pressing the key you saw the percent sign on.

here is a temporary solution in case that doesn't work:to enter a percentage up to write the digits before the tens and ones (if any, and if not, just type a zero), a point, and the last two digits.ex:
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  • 28%=0.28
  • 132%=1.32
  • 4243%=42.43

To write down the answer, take all the digits, take off the point, if the percentage is 99% or less, don't write the zero on the right of the period, and add a percent sign.

Oct 07, 2012 | HP 35s Scientific Calculator

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How do I use the percentage function on this calculator? Such as subtracting 75% off of an amount


You can use either of this 2 equations.

ex: 75% off of 20

Equation 1: 20 minus (-) 75% = 5

Equation 2: (20*0.75) = 15 then press Ans key
20 - Ans = 5

Hope this helps.

Jun 16, 2011 | Monroe Classic Calculator

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Good evening, I am having trouble figuring out how to configure a given percentage from a test into a Casio fx-115 ES calculator. I need to know how to convert a percentage or decimal into fraction form...

Enter the number, press =, then press the S--D key (located above the red DEL key).

For example, to see what 25% is, type . 2 5 = S--D

Note: if you're in the LineIO mode you will see something like 1 _ 4. If you want to see it as a "real" fraction, press SHIFT MODE 1 to switch to the MathIO mode.

Feb 27, 2011 | Casio FX-115ES Scientific Calculator

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How do you calculate percentages on the TI 83 Plus?

Sorry, but you cannot calculate percentages at the pressing of a key. The calculator does not have a key for that. You will have to do it yourself.
To convert a decimal result to a percentage, multiply it by 100: MOVE the decimal mark two places to the right.
To convert a percentage into a decimal number, divide the number by 100: MOVE the decimal mark two places to the left.

Aug 21, 2010 | Texas Instruments TI-83 Plus Calculator

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Acer,Aspire 5720-4663 Math calculator: How does one use the percentage function?

Hi. Try this steps on using your math calculator for the percentage function.

Hope This Helps

Step 1. Note that not all calculators behave the same way as far as the percentage key is concerned. Thus, test the examples in this article on your calculator. If your calculator does not have the percent key or does not behave in the way described here, don't despair - you can still use it to calculate percentages, it's just that you will have to press a few more buttons.
Step 2. Let's calculate a tip on your restaurant bill. Suppose your bill happens to be $64.35 and you would like to leave 15% tip.
Type the following into your calculator: 64.35 * 15 %
Answer: 9.6525 or $9.65 after rounding.
Most simple calculators will give an answer right here without having to press the = sign. If yours does not, press = and see if you get the right answer.
Alternatively, you can calculate this percentage by typing in
64.35 * 15 / 100 or 64.35 * 0.15
Thus, you may have observed that all that the percent key did here was division by a hundred.
Step 3. Let's calculate a grade percentage - say you got 34 out of a maximum of 40 points.
To figure out your grade percentage type in: 34 / 40 %
Answer: 85
Alternatively, without the percent key: 34 / 40 * 100
Step 4. Let's calculate a sale price on those shoes that originally cost $139, but are now discounted by 35%.
On your calculator type in: 139 - 35 % =
Answer: 90.35 or $90.35
This calculation is amazingly easy with the percent key! Alternatively, you would first have to calculate what the 35% of the $139 is and then subtract it from 139:
139 * 35 / 100 = 48.65
139 - 48.65 = 90.35

Hope This Helps

May 30, 2010 | Computers & Internet

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How to use the Logerithmic function on this calculator


Logarithms in base 10 :Common logarithms
  1. The calculator has a key labeled [LOG]. It allows you to calculate the common logarithms (logarithms in base 10).
  2. To calculate the common logarithm of a (positive) number you type in the number, press the [LOG] key .
  3. Ex: 15.32 [LOG][=] gives 1.1852558765
Logarithms in base e : Natural logarithms
  1. The calculator has a key labeled [LN]. It allows you to calculate the natural logarithms of positive numbers.
  2. Ex: natural log of 15.32 is entered as
  3. 15.32 [LN] gives 2.729159164
Hope it helps.
Don't forget to rate the solution and don't be stingy: 4 thumbs up won't leave you any the poorer.

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Lyreco calculator and no instructions for setting tax rate

Hold % key until '0' appears. Press 'Tax+' button. Enter percentage, followed by the % key. Press ON/C then the 'Tax+' key to confirm.

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2 Answers

My calculator will not let me add or subtract percentages.

I have a Casino MS-80S and yea, the percentage works different. As example to take 100 and subtract 10%, this is what I do: 100 X 10% - and then I get the answer 90 after I press the minus key. To add the percentage instead, 100 X 10% + will give me an answer of 110, after I press the plus key.

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The formula is 200/700 equals the percentage;if you're in columns a, b, and c, the formula in c1 will look like:

Then you can format the cell to show the number (.2857) as a percentage (28.57%).

Jan 03, 2009 | Microsoft Computers & Internet

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