20 Most Recent Casio fx-300ES Calculator - Page 5 Questions & Answers

When you enter a fraction using the fraction key, the displayed fraction is always reduced (simplified). By hand, you look for common factors in the numerator and denominator then simplify by them. Keep looking for common factors and simplifying until there are no more common factors.

pH=-log[H3O+] and [H3O+]=10^(-pH)

Press SHIFT 9 (CLR) and select the type of reset you want.

Press SHIFT [SETUP] 2 to switch to the LineIO mode.

Press SHIFT [MODE] then select either 6 followed by a digit or 8 followed by 1 or 2 to select either fixed decimal or normal display mode.If you need a manual, you may download a copy here.

It can handle square root but if result requires too much display space it will be displayed as a decimal.As to higher order roots such as cube , 4th and higher they are displayed as decimal. Sorry, there is nothing you can do about it.

Hello,
Since you bent on deactivating the very features that make your calculator so versatile and so powerful, here it is.
Press [SHIFT][MODE][2:LineIO] and you will see no more fractions, nor radicals etc. You asked for it.
Hope it helps.

The Casio Fx300ES does not provide comma or other separation/ spacing symbol to separate thousands.

There is a misconception hiding here in your statement. A decimal result on a calculator is often no more than an approximation: Try expressing 1/3 as a finite decimal representation. So, the only exact results that you may get are those displayed as fractions and those with radicals.Now let us address your question. The calculator has a limited display capability. Any decimal result that is too small or too large to fit in the display window will automatically be displayed in scientific notation (the one with exponents).If you want exact results, you should set the Input/output to MathIO. Even then, if the expression requires more display space than is available, it will be displayed as a decimal number.

I will supply a link to a website for you to download the user manual in PDF format, You will need adobe acrobat reader or similar to view this. You will also find a link to download adobe acrobat reader if you currently do not have a PDF reader.http://support.casio.com/manualfile.php?rgn=4&cid=004001132I hope this helps.

The variables available to you are A,B,C,D,E,X,Y. To type them in you press the ALPHA key, followed by the key near which a letter (A,B,C,D,...) is marked.If a variable, say X, is to be entered in the numerator of a fraction, press the stacked fraction key. In the upper square type the expression with X. When finished, use the Down key to move entry level in the lower square. After you finish the denominator, use the right arrow key to move the entry line to the main level.

You're in scientific or engineering notation. Press SHIFT SETUP 6 followed by the number of digits you want after the decimal point to switch to fixed decimal notation.

No it cannot factor. It does not do symbolic manipulations.If you know a bit of theory of polynomials you can find the roots of the polynomial equation. The calculator has a Solve utility. Once you have the roots, you can use your knowledge about polynomials to carry out the factorization procedure.

If you mean to raise a number to a power, use the x-superscript-box key just below and right of the big circular cursor pad.

Hello,
Regardless of the way it looks, this huge number is just 1, written in scientific notation, with 9 decimal digits. This is due to the configuration of your calculator.
To revert to the default display mode, press [SHIFT][MODE][6:Fix] and select a number of decimal digits between 0 and 9.
If you do not like the [MathIO] (fractions, radicals) you can use the [SHIFT][MODE][2:LineIO]
Hope it helps.

Press [SHIFT][9] to (CLR) clear. Select Clear SetUp, Clear Memory or Clear ALL