Hi. I have a problem with my Casio FX-115W device. I must have accidently switched sth because now the screen shows as fallows: REG, G, Sci. Please help me switch it off. I want to do the average calculations but now I simply can't. It can't be so serious can it? I need to make it work for my exams next week so I'd kindly ask for a prompt reply:)

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Press MODE then select CALC then COMP to remove REG.

press MODE again select DISP then NORM1 to remove SCI.

Posted on May 20, 2009

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Posted on Jan 02, 2017

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I just researched that for your model use the 'ln' key

Nov 26, 2013 | Casio FX-115W Plus Calculator

Casio fx-115W was locked into some sort of mixed-up engineering output but without the exponent. There is no reset method to my knowledge but by removing the battery and putting the calculator in a drawer for 30 minutes then re-installing the battery the calculator reset to default values and works properly.

on Jan 17, 2009 | Casio FX-115W Plus Calculator

Press the MODE key. Select NORM1, NORM2, FIX, or ENG to switch out of scientific mode.

Nov 02, 2011 | Casio FX-115W Plus Calculator

For natural antilogarithm use e^x (shift ln). For common antilogarithm use 10^x (shift log). The ln and log keys are on the right side of the keyboard, just above the tan and cos keys.

Jun 25, 2010 | Casio FX-115W Plus Calculator

The Casio FX-115W/991W/115E/991ES have three functions P(, Q(, R( and t(: the last one calculates the normalized variable noted t.

The Sharp EL-520W ans several similar Sharps do it too. Here is a screen capture.

The Sharp EL-520W ans several similar Sharps do it too. Here is a screen capture.

May 13, 2010 | Casio FX-260 Calculator

The Casio FX-115W/991W/115E/991ES have three functions P(, Q(, R( and
t(: the last one calculates the normalized variable noted t.

The Sharp EL-520W ans several similar Sharps do it too. Here is a screen capture.

The Sharp EL-520W ans several similar Sharps do it too. Here is a screen capture.

Mar 23, 2010 | Casio FX-260 Calculator

it should...

it can be found by SHIFT then MODE then SCI is the one you want to choose

it can be found by SHIFT then MODE then SCI is the one you want to choose

Jan 07, 2010 | Casio FX-300MS Calculator

Use x-root-y, the shifted function of the x^y key, below ON and above LN.

Dec 27, 2009 | Casio FX-115W Plus Calculator

Hi,

If you cannot find it, buy an FX-991ES. It is solar-powerd and it has the natural text-book display, which is a novelty in calculators.

I know that Staples carry the FX-991ES.

Hope it helps.

If you cannot find it, buy an FX-991ES. It is solar-powerd and it has the natural text-book display, which is a novelty in calculators.

I know that Staples carry the FX-991ES.

Hope it helps.

Nov 27, 2008 | Casio FX-115W Plus Calculator

This is described in the manual (link below) on page E-52
http://ftp.casio.co.jp/pub/world_manual/edu/en/fx-115ES_991ES_Eng.pdf
Also see example #083 in the appendix :
http://ftp.casio.co.jp/pub/world_manual/edu/en/fx-115ES_570ES.etc_Appendix.pdf

Jul 23, 2007 | Casio FX-115W Plus Calculator

Mar 16, 2013 | Casio FX-115W Plus Calculator

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