Question about Casio FX-300MS Calculator

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

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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.

Posted on Sep 25, 2009


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1 Answer

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

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 to change a decimal into a fraction

Use the [a b/c] button to convert a displayed decimal number to a mixed fraction. If you want to convert further to an improper fraction press [SHIFT][a b/c] to access (d/c).

The sequence [SHIFT][a b/c] (d/c) toggles between improper fractions and mixed fractions.

Sep 07, 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

Okay,when i push shift then push d/c,it don't work? I am not sure if I am doing it in a wrong order or what?

If you want to enter an improper fraction, you enter it with the [a b/c] key as follows
numerator [a b/c] denominator.
If you want to enter a mixed fraction do as follows
interger [a b/c] numerator [a/c] denominator
If you want to convert a mixed fraction to an improper fraction use the key sequence [2nd or SHIFT] [d/c]

Feb 13, 2010 | 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

2 Answers

I wanted to know if the Casio fx-300MS can ratio problems

Sorry to disappoint you but there is no special key to (solve) ratio problems. It does however have a key to enter mixed fractions ( [a b/c] ) and a key combination to convert between mixed and improper fractions [SHIFT] [d/c].
Hope it helps.

May 06, 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

Fractional powers

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

Apr 27, 2008 | Casio FX-300MS Calculator

3 Answers


To have a mixed number, you would press the division bar

Say you would like the mixed number 2/3/5
You would simply press 2, division symbol, 3, division symbol, and 5

Jan 07, 2008 | Casio FX-300MS Calculator

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