How do I set the decimal point?

By default the calculator is set to display two digits after the decimal point (for dollars and cents). If you'd rather have no digits after the decimal point, press 2nd [FORMAT] 0 .

Alternatively, you can press 2nd [FORMAT] 9 for floating decimal.

2nd [format] 4 enter thats 4 decimal places which should be enough for any question

Press 2nd [FORMAT], type a digit representing the number of digits you want after the decimal point (or 9 for floating), then press ENTER 2nd [QUIT].

By default the BAII Plus displays only two decimal places. This is not enough. Personally, I like to see five decimal places, but you may prefer some other number. To change the display, press the 2nd key, then the decimal point key, and, when prompted, enter the number of digits you would like to see displayed. You must then press the Enter key to lock in your choice. I would press 2nd, ., 5, Enter to display 5 decimal places. Now press 2nd, CPT to return to a blank screen. Problem solved.

One other adjustment is important. The BAII Plus comes from the factory set to assume monthly compounding. That's fine, I suppose, but its better to set it to assume annual compounding and then make manual adjustments when you enter numbers. Why? Well, the compounding assumption is hidden from view and in my experience people tend to forget to set it to the correct assumption. Of course, most people don't recognize a wrong answer when they get one, so they blithely forge ahead. To fix this problem press 2nd then I/Y and enter 1 when prompted. Now press Enter and then 2nd, CPT to return to a blank screen. Problem solved.

Press 2nd [FORMAT]. Press 0-8 for the number of digits after the decimal point, or 9 for floating-decimal, followed by ENTER. Press 2nd [QUIT] to exit.

Your BA II PLUS stores numeric values internally to an accuracy of 13 digits. However, the numbers it displays depends on the number of decimal places to which you have it set (choice of 0–9 or floating decimal). To set the number of decimal places displayed to three: hit [2ND][FORMAT][3][ENTER]This setting also continues indefinitely (even though the calculator is turned off and on) until it is changed.

Your BA II PLUS stores numeric values internally to an accuracy of 13 digits. However, the numbers it displays depends on the number of decimal places to which you have it set (choice of 0–9 or floating decimal). To set the number of decimal places displayed to three: hit [2ND][FORMAT][3][ENTER]This setting also continues indefinitely (even though the calculator is turned off and on) until it is changed.

Your BA II PLUS stores numeric values internally to an accuracy of 13 digits. However, the numbers it displays depends on the number of decimal places to which you have it set (choice of 0–9 or floating decimal). To set the number of decimal places displayed to three: hit [2ND][FORMAT][5][ENTER]This setting also continues indefinitely (even though the calculator is turned off and on) until it is changed.

Hi - You can download the manual from the following link:

TI BA II Plus

Good luck!

Set the +43210F switch to + (or 2).
On some models it is A43210F, then use A (or 2).
+ mode will let you enter numbers (monetary) without the decimal point and assumes cents; 2 mode will just round to 2 decimals, but you must enter the decimal.