Question about Casio FX-115ES Scientific Calculator

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CFX-9850GaPlus When I do a simple decimal calulations (5.3- 4.5) and get the answer (0.8), I should be able to press the F-D key to convert to 4/5. It does not work,. If I do a calulation that starts with a fraction, I can then convert the to a decimal....

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  • hklucas Jan 04, 2008

    I thought that as well until I did it on my 9750G fine.....any other suggestions...I check mode (comp), etc....I am at a loss and I have a classroom full of these calculators



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"Decimal to fraction is a non trivial calculation that can have multiple answers so doesn't lend itself to a calculator feature."
LOL i hope u are being ironic...

anyway the check list for f-d to work:
-mode comp (wich u allready have)
-display norm1 or norm2
in the LINK from main menu make sure Image set mode is OFF

Posted on Jul 11, 2008

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I think the F-D function only works one direction from fraction to decimal. Decimal to fraction is a non trivial calculation that can have multiple answers so doesn't lend itself to a calculator feature.

Posted on Jan 04, 2008


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Hi there,

My name is adieh.have a great day.

I will give a simple example on how to convert your answer into decimal form. Indicated below:

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