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# How to convert decimals into fractions in Casio fx-991MS ...?

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When the calculator (in this case Casio fx....) Look for the "a b/c" button on the key pad. For example 1.5 becomes 3/2 or 1 1/2

Posted on Nov 24, 2013

Hi,
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Posted on Jan 02, 2017

SOURCE: casio fx-83ES

there is a button SD close to AC button, standard - decimal try it .......or
shift+mode format math IO, change it to the other option

Posted on Dec 03, 2008

if you mean degrees like the degree/minute/second thing: lets say you have 24.12 there is a button that has a dot, and 3 commas (it's located next to the negative button) that will convert that number to degrees. input your decimal, press the equal sign, and then press that degree button and it will convert 24.12 to degrees, minutes, and seconds. the solution is 24 degrees, 7 minutes, and 12 seconds.

Posted on Jun 09, 2009

pressing the 'a b/c' key toggles between fraction and decimal formats

Posted on Sep 15, 2009

Hello,
I am only looking for a plausible cause of the error, because I do not believe your calculator can make such a mistake. I think you accidentally activated the Exponential display format and did not pay attention to the small, raised -03 that came at the end of the number displayed. It is a common mistake for those not very familiar with Scientific or exponential notation.

Let us try to reset your calculator to the normal (floating point) format.
Press the [MODE] key a number of times until you reach a screen that has FIX, SCI, NORM and under each one a number (FIX 1, SCI 2), Norm 3). To have the number of decimal place you gave in your result (4 decimal digits), you press 1 to select Fix then 4.

Be aware that scientific calculators usually stop displaying results in floating point format ( 0.0000045 ) if the number is smaller then 0.001. So basically, 0.00099 will be displayed as 9.90-04, -04 being raised above the level, and in smaller size.

Hope it helps.

Posted on Oct 02, 2009

Testimonial: "Thanks so much, its working now:) I thought I was going to have to buy a new calculator!"

If the result is already calculated and displayed, press the [S<=>D] key It will convert a fraction or radical to decimal. This is always possible. If the result is decimal it may be converted to a fraction or a radical (Not always possible).

If the expression to be evaluated is still in the command line and you have not pressed the [=] key, you can force the result to be displayed in decimal format by pressing [SHIFT][=] instead of just [=].

More permanently. If you do n o care for fractions and radicals, set the Input/Outpout mode to LineIO. To do do press [SHIFT][MODE] to access the (SETUP) screen and select [2:LineIO]

Posted on May 25, 2010

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## Related Questions:

### How can i convert decimal to binary number in casio fx 82ms calculator?

This gentleman explains it very well. The trick seems to be to enter the number and then hit the equals sign, and then do the conversion.

Good luck,

Paul

Decimal to Binary and Hexadecimal conversions using casio fx 991MS HYONKOWS

Dec 20, 2016 | Casio Office Equipment & Supplies

### How do I simplify radicals using a CASIO fx-991MS?

To convert a single result to decimal, press the SD key. To have all results come out in decimal, press SHIFT MODE 2 to select LineIO mode.

Sep 22, 2010 | Casio FX-300MS Calculator

### Can you convert a decimal to a fration on the fx-300MS scientific calculator? If so how?

To convert a fraction to a decimal or a decimal to fraction you use the [a b/c] key.
While converting a fraction to a decimal number is always possible, converting a decimal to a fraction may, at times, not be possible.

Sep 10, 2010 | Casio FX-300MS Calculator

### How to convert fractions to decimals

To convert fractions to decimals, and decimals to fractions use the [a b/c] key. If the total number of symbols (num, denom, fraction bar) to display a fraction exceeds 10, the fraction is automatically converted to decimal format.

Jul 19, 2010 | Casio FX-300MS Calculator

### I can't get the answer to display in decimals only fractions.

For converting answers in decimal to fraction or fraction to decimal there is a S<->D key above delete key.If the answers is in fractional form press this key and it will be converted to decimal form.

Jun 04, 2010 | Casio FX-115ES Scientific Calculator

### I have an fx 260 casio and I would like to know how to convert decimals to fractions using this calculator thanks

You can always convert a fraction to a decimal. The reverse may not alwas be possible.
Look at the example on the screen capture.

May 12, 2010 | Casio FX-260 Calculator

### How do you reduce a fraction on a Casio

The calculator automatically reduces all fractions to simplest terms.

Or do you mean to convert it to decimal? To convert a single result to decimal, press the S

Mar 06, 2010 | Casio FX-115MS Plus Calculator

### Cant get answers in decimal format, I would like to set up my casio fx83es so that the answer is in decimal format all the time.

Hello,
To make sure that results are always in decimal format, put a decimal mark (point) at the end of one integer.
ex: 1./2 or 1/2. or 1./2. display as 0.5, so does 1. + 1/2
To convert from decimal to fraction and from fraction to decimal press a b/c
To convert from proper to improper fractions use [SHIFT][d/c]
Hope it helps.

Oct 04, 2009 | Casio fx-300ES Calculator

### Problems with fractions on the Casio fx-115es

Hello,
To convert fractions to decimals or decimals to fractions, you use the [S<->D] key. Each time you press the key the result is displayed in the other format.
Alternatively, If you multiply or divide two integer numbers put a decimal mark at the end of one of the numbers (any one). The result will be displayed in decimal format.

Hope it helps.

Jun 01, 2009 | Casio FX-115ES Scientific Calculator

### Changing decimals to fractions

You can always convert a fraction to a decimal. The reverse may not always be possible. Look at the example on the screen capture.

You may be lucky and recover a fraction you have just converted into decimal format, but you cannot just write 0.333333333333 and expect the calculator to convert it to 1/3: The true fraction 1/3 has an infinite number of 3's after the decimal mark.

Jan 06, 2009 | Casio FX-260 Calculator

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