Question about Casio FX-115ES Scientific Calculator

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Problems with fractions on the Casio fx-115es

I just recently purchased the Casio fx-115es for a math class I am taking. We are starting fractions and I cannot get my calculator to give me an answer. It just restates the fraction or gives me an improper fraction. Is there a special key I have to press to get the correct answer? (I am trying to multiply and divide fractions.)

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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

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Posted on May 08, 2015

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1 Answer

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Press [SHIFT][MODE] to enter (SetUp). Select [2:LineIO] and you will be rid of the MATH Input/Output. You will lose some nifty features, like the stacked fractions, the radicals, but that is your choice.

Cheers.

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The fx-115ES is a physical device and cannot be downloaded. The manual, however, may be downloaded from here.

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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.

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To convert a single value from symbolic to decimal form, press S--D. To have all results come out in decimal, press SHIFT MODE 2 to switch to the LineIO mode.

Aug 01, 2011 | Casio FX-115ES Scientific Calculator

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If you want your result to be displayed as fractions, set the Input/Output Mode to MthIO.
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To convert a single result from symbolic to decimal, press the S--D key. To have all results come out in decimal, press SHIFT MODE 2 to select the LineIO mode.

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1 Answer

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I am not sure what you want because the mathIO mode IS THE ONE THAT DISPLAYS results as fractions.
You have two display modes: MthIO (with fractions, radicals) and LineIO (with decimals). Which one do you want?
To set MthIO press [Shift][MODE][1:MthIO]
To set LineIO, press [SHIFT][MODE][2:LineIO]

Concerning the scientific display mode.
Decimal numbers can be displayed in various formats, Fixed,Scientific, and Normal. If you do not want scientific display of results, just set the mode to Fix(ed) and specify the number of decimal digits. However if a number to be displayed (a result) is too small or too large IT WILL BE DISPLAYED in scientific format regardless of the mode you selected.



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1 Answer

How to change or put math mode without fractions or scientific notation on calculator fx-155 es natural display


Press SHIFT MATH 2 to switch to the LineIO mode. You won't see fractions then. However, if magnitude of the number is too large or too small, the calculator will switch to scientific notation in order to fit into the display.

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In Math Mode, press shift then equals will change the fraction result to a decimal result

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