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# How to turn off fractions on casio calculator

Posted by Anonymous on

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Posted on Jan 02, 2017

Posted on Feb 09, 2009

Hello,

Sorry to disappoint you but you cannot do it due to the fact that the representation of irrational (SQRT(2), ..) and transcendental (e, pi, etc.) numbers on a calculator or even a computer is approximative : a number like sqrt(2) has an infinite number of decimal digits while the number of internal digits a calculator uses to store results is limited (10, 12, 15 or even 24).
Once an irrational or a transcendental number has been evaluated numerically it generally ceases to be exact.

If you want to manipulate algebraic expressions, you need a calculator that has a CAS (computer algebra system) operating system and a symbolic algebra option.

Some exemples of calculators with a CAS are The TI nspire CAS, the HP 48 series, HP 49, HP 50, Casio ClassPad3xx, the TI 89titatium, the TI Voyager 200PLT, the TI 92 and Ti 92Plus. The ones with a fullblown keyboard might not be accepted on certain standardized test.

You may also try to get some emulators on the Internet for the HPs or the TI 8xx and play with them on the computer.

Hope that helps.

Posted on Aug 17, 2009

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.

Posted on Sep 12, 2009

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

Posted on Sep 15, 2009

There is only one key to toggle between display formats: the S<>D key. Pressing the key repeatedly will cycle through all available display formats.

Posted on May 25, 2012

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## Related Questions:

### Calculate numerical value of fraction

A fraction is itself a value. If you want its decimal representation perform the division. On the Casio FX99ES, you can convert a fraction to its decimal representation by pressing the S<=>D key.

Jul 27, 2014 | Casio FX991ES Scientific Calculator 403...

### Can a casio fx-115es reduce fractions

Yes. Simply enter the fraction and press =. If the calculator is in the MathIO mode it will display the fraction in its simplest form. If you're in the LineIO mode, press the S--D button to convert the decimal to fraction.

Aug 18, 2011 | Casio FX-115ES Scientific 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

### Problem for Casio FX-260 Calculator Changing fractions to decimals

To force a fraction to be displayed as a decimal number put a decimal mark at the end of the numerator OR the denominator. Fraction/decimal result is always decimal.

Nov 12, 2009 | Casio FX-260 Calculator

### Changing fractions to decimals

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

Sep 05, 2009 | Casio FX-260 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

### When I divide, it turns the answer into a fraction. How do I get back so the answer will be a decimal? With a Casio fx-115 ES

Press the S<>D key, (located right above "DEL"). This will shift the answer from fraction to decimal. This sounds like a pain but having both functions available can be a big plus.

May 20, 2009 | Casio FX-115ES Scientific Calculator

### Fractional powers

use the "carrot" button, ^. Type in 4^.5 and you get 2. If you are going to use fractions, use the division bar and parenthesis and not the fraction key. Example 4^(1/2) = 2

Apr 27, 2008 | Casio FX-300MS Calculator

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