How do i set the calculator to only 2 decimal points?

If you want all entries and answers to have two numbers after the decimal, you should have a lever or slide that shows F,6,3,2,1,0. Some also show Add. Set the lever on the 2 or add. F means floating decimal. the others indicate how many numbers after the decimal.

Your calculator is set to scientific notation. To get out, press f followed by a digit representing the number of digits you want after the decimal point. To have two digits after the decimal point, for example, press f 2.

How do I program tax rate into my calculator?
Non-printing models (also applies to HR-8TE printing calculator):

1. Press [AC]
2. Hold [SET/%] key for about 2 seconds
3. Press [TAX+]
4. Input the tax rate
5. Press [SET/%]


Printing models (except HR-8TE):

1. Have calculator in "print" mode
2. Press [CA]
3. Hold [SET/%] key for about 3 seconds
4. Input the tax rate
5. Press [TAX+]
6. Press [SET/%]
^Top I am having a problem registering the ClassPad 300, it keeps telling me my product key is wrong.
Enter only the numerals, not the letters.
^Top What features do our calculators have?
The attached chart shows comparisons of the different calculator models. This includes graphing, scientific and printing calculators. download the chart here
^Top What is the [F CUT 5/4] switch or [DEC] F, 0, 2 button for?
The HR-8TE/HR-8TM have a [DEC] key with F, 0, 2, and 5/4 over it, while many other calculators models have a switch labeled [F CUT 5/4].
The button or switch can control rounding off to a certain number of decimal places. F is floating point (no F indicator on screen), 0 rounds off to 0 places after decimal point, and 2 rounds off to 2 places after decimal point.
The 5/4 applies to either the 0 or 2 modes, and describes the type of rounding off that is performed. The calculator will round down if the digit after the one you are rounding to is 4 or lower, and round up if the digit is 5 or higher.
^Top What is the [5,4,3,2,1,0 ADD (2)] switch used for?
This switch is used to determine how many decimal places your answer is displayed in.
ADD (2) is often used for monetary calculations, so that it is not necessary to enter the decimal point. It is automatically placed two decimal places from the end for cents. For example, entering 123 will display as 1.23.
^Top Why do I get 111.1111... when I calculate 100+10%?
This is a markup on price procedure. The formula is as follows:
Markup%=(Markup Price-Cost)/(Markup Price)
^Top Why do I get the wrong answer when doing a percent calculation?
Make sure that you are following the correct procedure.
Adding 10%: 200 [×] 10 [%] [+]
Subtract 10%: 200 [×] 10 [%] [-]
^Top What tests are calculators permitted for?
AP Calculus requires a graphing calculator.
Any graphing or scientific calculator is permitted on the following as long as it does not have a QWERTY keyboard, electronic writing pad or a pen-input/stylus-driven interface:
PSAT/NMSQT, SAT I
SAT II Math, IC & IIC
AP Statistics (graphing expected)
AP Chemistry
AP Physics

Decimal Point and Separator Symbols
You can use the display setup (Disp) screen to specify the symbols you want for the decimal point and 3-digit separator.
• To change the decimal point and separator symbol setting, press the MODE key a number of times until you reach the setup screen shown below.
Display the selection screen. (Disp) 1.
Press the number key ( 1 or 2) that corresponds to the setting you want to use.
1(Dot): Period decimal point, comma separator
2(Comma): Comma decimal point, period separator

Have you tried messing around with the decimal setting and setting if to F (floating) or somethings besides 2? This should affect your inputting of numbers however. You're not hitting the percent key (%) by any chance, are you. I don't have this calculator but I'm not aware of any function that inserts a decimal point in a number that you enter (other than the percent key). The decimal setting should only affect the number of decimal points in the answer. Good luck and let us know how you make out. I'm curious.

Do you mean four places behind the decimal point? Page 21 describes setting for fixed decimal point 0 thru 9 places to the right.
http://education.ti.com/downloads/guidebooks/graphing/83p/83m$book-eng.pdf

Set up > TAB > then select how many numbers you want after the decimal place.

You have to make sure that the third set of buttons wit the K*A is set to A and the 5th set of buttons is on the 2.

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.

I copied this from another post & it worked for me:

To enter the date

1. Be sure to switch to "rate set" from GT
2. Enter the month
3. Press the decimal point
4. Enter the day
5. Press the decimal point
6. Enter the year
Example 3.09.2007
7. Press the button that look like a clock/calendar

To enter the time

1. Be sure to switch to "rate set" from GT
2. Enter the hour (please use military time)
3. Press the decimal
4. Enter the minutes
Example: 13.24 or 9.24
5. Press the button that look like a clock/calendar

Then change the "rate set" back to the GT setting.