Question about Casio MS-80TE Calculator

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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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3 Answers

Re: Percentage Key

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

Posted on Feb 01, 2008

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Re: Percentage Key

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

Posted on Jan 23, 2008

Re: Percentage Key

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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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

1 Answer

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:
  • 56%=0.56
  • 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

1 Answer

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

1 Answer

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

1 Answer

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

1 Answer

Hey , how can i do percentage and fractions on the ti 84 plus silver edition ? Thxxx :D

There is no key nor command to calculate percentages. But that is easy to correct.

To go from a decimal result to a percentage, move the decimal mark 2 places to the right. If you have no decimal mark as with integers, put a decimal mark at the end of the number pad it with zeros, then move the decimal mark 2 places to the right.
Ex: 0.73 in % gives 73.0%
Ex: 2.33 in % gives 233.00 %
Ex: 5 in % 5=5.00 becomes 500%

The calculators has a command to convert a decimal number to a fraction. The command is called >Frac or To frac. You find it under the MATH key.

Enter a number (decimal or fraction)
Press [MATH][1:>Frac]
Command echoes on main screen after the number you entered.
Press [ENTER] the result is displayed as a fraction.
  1. If the number entered or stored in answer memory is a decimal number it will be converted to a fraction.
  2. If the number you entered is a fraction, the result will be displayed as a fraction but REDUCED to its simplest terms.
  3. For example 6/9 becomes 2/3
OS version 2.53MP

The TI 84PLUS and TI84PLUS Silver edition OS has seen a major upgrade to version 2.53 M(ath)P(rint). If you play a lot with fractions this new OS will allow you to do a lot more than what is described above.

Here is the link to download the new OS version. It cannot be transferred to a TI83PLUS or TI83PLUS SE.

Aug 07, 2010 | Texas Instruments TI-84 Plus Silver...

2 Answers

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.

Nov 23, 2009 | Texas Instruments TI-36 X Solar Calculator

1 Answer

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.

Sep 29, 2009 | Calculators

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.

Apr 04, 2009 | Casio HR8TM Calculator

2 Answers

The % of a discounted price

Lets say Your

MRP = 199

Now you want to calculate that howmuch percentage of BESTSALE i.e 130, will be added to get MRP i.e. 199.

If m right what do you want, then use the following formula:

Percentage = ((MRP/BESTSALE) - 1) x 100

In your case 199/130 = 1.5307....
So 1.5307 - 1 = 0.5307
Then 0.5307 x 100 = 53.07 %


Mar 10, 2008 | Calculators

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