20 Most Recent Casio fx-300ES Calculator Questions & Answers

Hi,
Turn calculator ON. Press [SHIFT] [9] (CLR) and select
1. Setup,
2. Memory, and
3. All.
4. Then press [=] to execute the reset.
Note: The choices of reset options are those available for the FX-991ES. But the procedure is similar.

Hope it helps.
Thank you for using FixYa and for rating this solution.

Casio fx-300ES... | Answered on Sep 22, 2019

Press [SHIFT[[ MODE] to enter (SetUp), then select [1:MathIO]

Casio fx-300ES... | Answered on Mar 27, 2019

To calculate the square root use the square root key, three rows above the "8" key.
If you want to see the result symbolically, press SHIFT MODE 1 to select the MthIO mode. Bear in mind that the calculator can only show some results symbolically.

Casio fx-300ES... | Answered on Dec 22, 2018

To configure the calculator to do fractions, set the Input/Output mode to MathIO.
Press [SHIFT][MODE] to open (SetUp) then select [1:MathIO].
After you set it to MathIO, pressing the fraction key will display a fraction template where you can enter numerator and denominator as you would by hand (horizontal fraction bar). Also, the calculator will display results as fractions and radicals whenever possible.
To perform arithmetic operations on fractions use the regular operation keys (x, +, -, /). The calculator will perform the operations and display the results as fractions (whenever possible).

Casio fx-300ES... | Answered on Sep 27, 2018

I had the same problem. To change the output to decimals, do the following:
Go to Math mode, then SHIFT, MODE (set-up), 2 (lineIO). This will cause answers to show in decimal format. I hope this helps.

I was able to find a manual at: http://www.generalmanual.com/Calculators/Casio-FX-300ES-Scientific-Financial-Calculator.htm

Casio fx-300ES... | Answered on May 16, 2018

The little L is the way to separate the numerator from the denominator. That is the old way of writing fractions. If you want the stacked representation, switch the display mode to MathIO.
Press Shift Mode to get to Settings, then enter the number corresponding to MathIO.

Casio fx-300ES... | Answered on May 01, 2018

Get another calculator.

Casio fx-300ES... | Answered on Apr 08, 2018

Hi,
To get out of the default MthIO press [SHIFT][MODE][2:LineIO]
To get out of Sci display format, press [SHIFT][MODE][6:Fix] followed by a number between 0 and 9, that will set the number of decimal digits.

Hope it helps.
Thank you for rating this solution.

Casio fx-300ES... | Answered on Oct 09, 2016

Hello,
The Casio FX-300ES does not handle symbolic algebra. So it cannot factor a general polynomial expression. The methods can be found in any book on Algebra.
However if you are interested in approximate factorization of quadratic and cubic polynomials, you can use the calculator to do that. It can solve aX^3 +bX^2+cX+d =0 and the quadratic equations.

If you want to factor a cubic polynomial P3(X) = aX^3+bX^2+cX+d , you write the corresponding cubic equation as aX^3+bX^2+cX=d =0 , then you divide all terms of the equation by a to obtain

X^3+(b/a)X^2+(c/a)X+(d/a)=0.

You use the calculator to solve (approximately) this equation.
Suppose you find the 3 roots X1,X2,and X3. Then the polynomial X^3+(b/a)X^2+(c/a)X+(d/a) can be cast in the factored form (X-X1)(X-X2)(X-X3) and the original polynomial P3(X) can be written as

P3(X) = a*(X-X1)(X-X2)(X-X3)

You can handle the quadratic polynomial the same way.

P2(X) =a*(X-X1)(X-X2) where X1, X2 are the two real roots

Hope it helps.

Casio fx-300ES... | Answered on Aug 28, 2016

fx-300ES Calculator Manual

Casio fx-300ES Calculator | Uploaded on Apr 12, 2016

I don't think you can change the pi value on your calculator. However, what you can do is store 3.14 in the memory and instead of using the pi key, recall the number from the memory key.

How to use the various memory keys is outlined in the manual.

Good luck,

Paul

http://support.casio.com/storage/en/manual/pdf/EN/004/fx-300ES_PLUS_EN.pdf

Casio fx-300ES... | Answered on Apr 08, 2016

You could always remove the battery and start over. The procedure for removing the battery is on page 29 in the attached manual.

Good luck,

Paul http://support.casio.com/storage/en/manual/pdf/EN/004/fx-300ES_PLUS_EN.pdf

Casio fx-300ES... | Answered on Mar 08, 2016

Are you trying to find a particular term in the geometric sequence?

For example, in the geometric sequence 2,4,8,16 to find the 15th term we would use the formula a sub n = a sub 1 x r ^(n-1), where a sub n is the nth term of the geometric sequence
a sub 1 is the 1st term of the geometric sequence
r is common ratio between successive terms
n is the term you are looking for

In our example, a sub 1 is 2, r is 2 and n is 15.

a sub n = a sub 1 x r ^(n-1)
a sub 15 = 2x 2(15-1)
a sub 15 = 2 ^ 15
a sub 15 = 32,768

On your calculator, you use the key to the right of x^2 to do x to the nth power.

Good luck.

Paul
Geometric Sequences and Series

casio fx 300es manual Google Search

Casio fx-300ES... | Answered on Jan 14, 2016

To insert pi on this calculator press [shift] [x10x] . (you can see the pi symbol above and to the side of this button).

Casio fx-300ES... | Answered on Dec 21, 2014

Set the Input/Output display mode to LineIO. Press Mode then select 2: LineIO

Casio fx-300ES... | Answered on Dec 05, 2014

Change from 5 decimal places to what?

Casio fx-300ES... | Answered on Oct 02, 2014

That is not something that can be done by calculator. Do all the operations to get a result. Look at the number of significant figures in each number in the chain of operations. Keep the least number of significant figures. The result of a calculation cannot be more precise than the least precise of its components.

Casio fx-300ES... | Answered on Sep 02, 2014

Use the quadratic formula, or factor the quadratic polynomial. Once factored into a product of two first degree binomials, the roots are obtained by setting (in TURN) each binomial factor equal to zero.

Casio fx-300ES... | Answered on Aug 27, 2014

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