Question about Casio FX-300MS Calculator

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Fractional powers I have a casio fx-300ms. How do I calculate fractional powers ? ie 4 to the power 0.5 =2. what is 4 to the power e or to the power 7.6 etc

Posted by alicemg on


1 Answer


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

Posted on May 22, 2008


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How do I minus fractions on my fx-300ms

The same way you do positive fractions. Just make sure you use the (-) key located just above the RCL key to enter negative numbers.

Mar 22, 2012 | Casio FX-300MS Calculator

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I am using my Casio fx-300MS and have somehow gotten into the display where it puts my answers in exponential form; 5+5 = 1.0 exp10 to the 1. How do I return to getting my answers in standard form?

Display Format

To change the exponential display format, press the [MODE] key 3 times.

Fixed number of decimal places:

Press 1: Scientific Notation: 0

Press 2: SCI: 0

Press 3: NORM

You will then be prompted for NORM 1 or NORM 2. CHOOSE NORM 1

To return the calculation mode and setup to the initial defaults, press [SHIFT] [CLR] [2]

[=]. This will return the calculator to the following settings:

Calculation mode COMP

Angle unit Deg

Exponential display format Norm 1

Fraction display format a b/c

Decimal point character Dot

Percentage Calculations

Apr 13, 2011 | Casio FX-300MS Calculator

1 Answer

I'm trying to do fractions on my casio fx-300MS S-V.P.A.M. can you help me

if you need to use fractions, look at the symbol the second button beneath the RED ALFA button.

Mar 31, 2011 | Casio FX-300MS Calculator

1 Answer

Can you convert a decimal to a fration on the fx-300MS scientific calculator? If so how?

To convert a fraction to a decimal or a decimal to fraction you use the [a b/c] key.
While converting a fraction to a decimal number is always possible, converting a decimal to a fraction may, at times, not be possible.

Sep 10, 2010 | Casio FX-300MS Calculator

1 Answer

How do i change a decimal into a fraction on a casio 300ms

Assuming the number is something that the calculator can convert to a fraction, press the S--D key.

May 07, 2010 | Casio FX-300MS Calculator

1 Answer

How do I key mix number fractions on the Casio 300MS Calculator?

Use the [ab/c] key
1[ab/c]2[ab/c] 3 displays 1u2u3. Pressing [SHIFT][d/c] converts this to 5u3. Pressing the [SHIFT][d/c] again converts the result to 1u2u3

Hope it helps.

Sep 25, 2009 | Casio FX-300MS Calculator

1 Answer

How to add mixed fractions

Use the fraction mode to enter the fractions and use the addition operation like you do for any number.
Calculate 2 3/7 + 4 5/19

2 [ab/c]3 [ab/c] 7 [+] 4[ab/c] 5[ab/c] 19 [=]
Result is 6 92/133 or 890/133
Hope it helps.

Aug 05, 2009 | Casio FX-300MS Calculator

1 Answer


there is a A b/c button. This is the button use to enter fractions. so 4/3 would be entered as 4 |A b/c| 3

If you want to have the answers in fractions as well, then I believe you hit more a few times. And then there should be a display option, in the display option, there should be a b/c. This will show your answers in fractions. Hope it helps

May 05, 2009 | Casio FX-300MS Calculator

1 Answer

Dividing fractions

Once a fraction is entered it can be submitted to all allowable operations, like any other number. So keep the fractions coming. The calculator will reduce them to their simplest expressions.
Hope it helps.

Apr 12, 2009 | Casio FX-300MS Calculator

1 Answer

Casio FX-300MS - Simplifying Radicals

Sorry the calculator handles fractions but not radicals. You may be interested in the newer Casios FX-115ES, or FX-991ES, (Natural display).
It handles a lof more that radical and fractions.
Hope it helps.

May 28, 2008 | Casio FX-300MS Calculator

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