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My Casio fx-82AU Plus won't give me a fraction answer

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Posted on Jan 02, 2017

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SOURCE: on my casio fx-82au plus calculator it won't

The capability of these calculators to handle irrational numbers in radical form is limited to square roots. Roots of index other than 2 are always displayed in their decimal representation.
If the calculator IO mode is set to MathIO, square roots will be displayed with the radical symbol. More complicated expressions with square roots might not be preserved and will be given as decimal numbers.

Posted on Nov 01, 2012

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bburton519
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SOURCE: on my casio fx-82au plus calculator it won't

I have a casio fx-82Au calculator.
When I do a square root equation it gives me a decimal answer.
How do i get it to show as a surd
I have tried using the button s<>d and it is not working. Please help!!

Posted on Oct 21, 2013

jacksonmary1
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SOURCE: on my casio fx-82au plus calculator it won't

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Posted on Mar 31, 2017

julieazev80490
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SOURCE: on my casio fx-82au plus calculator it won't

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Posted on May 18, 2017

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4 Answers

On my casio fx-82au plus calculator it won't


The capability of these calculators to handle irrational numbers in radical form is limited to square roots. Roots of index other than 2 are always displayed in their decimal representation.
If the calculator IO mode is set to MathIO, square roots will be displayed with the radical symbol. More complicated expressions with square roots might not be preserved and will be given as decimal numbers.

Oct 31, 2012 | Office Equipment & Supplies

3 Answers

My casio calculator is giving answers always in fraction form. I need to get the answers in decimal form (my calculator is fx-991ES)


To convert a single answer from symbolic to decimal, press the S--D key (just above the DEL key). To have all answers come out in decimal format, press SHIFT MODE 2 to switch to the LineIO mode.

Aug 04, 2012 | Casio Brand New-Fx-991es Plus - Scientific...

1 Answer

How do i change the mode on my Casio fx-82au plus calculator?


Press SHIFT [MODE] to bring up the mode screen. Press 8 for NORM, then 2.
Bear in mind that if the magnitude of the number is too large or too small the calculator will switch to scientific notation anyway. For example, if a number has twenty leading zeros then it won't fit on the display unless it displays it as a power of ten to the negative twenty.

Apr 02, 2012 | Casio Office Equipment & Supplies

1 Answer

I have a Casio fx-82au plus and want to input logs to the base less than 10. Is there a way to do this? eg log to the base of 2 = 16 (answer is 4 but how do we get that to work on this calculator).


You can calculate the logarithm to any base by using the relationship
logb(x) = log(x)/log(b) = ln(x)/ln(b).

To calculate the log base 2 of 16, either divide the log of 16 by the log of 2 or the ln of 16 by the ln of 2.

Apr 07, 2011 | Casio FX-115ES Scientific Calculator

1 Answer

Hi, i have a casio fx-82au plus, and it gives me the wrong answer when i press -X^2(X is any number. it'll give me -X. how can i fix this??


If you want to square a negative number, you should enclose it in parentheses then raise it to the 2nd power.
-5^2 =-25 .Priority to squaring ahead of negating
(-5)^2=25 .Priority to parentheses before squaring

Jan 28, 2010 | Casio FX-115ES Scientific Calculator

2 Answers

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

2 Answers

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

1 Answer

When I divide answers are always given in Fractions. Can I change it to come out in decimals?


To change from Fraction display to Decimal display on the Casio fx-300ES (and probably other calculators)

1) Press the "SHIFT" button
2) Press the "MODE/SETUP" button
3) Press the "2" button
This Changes it to LINEIO (Decimal)

Doing all of the above but pressing the "1" button instead of the "2" puts it back into MATHIO mode (Fraction)

Hope this Helps

(SHIFT)(MODE/SETUP)(2) to change to decimal

Nov 07, 2008 | Casio fx-300ES Calculator

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