Question about Texas Instruments TI-83 Plus Calculator

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Hi! I am having trouble calculating decimals correctly. I add .74 + .52 and it gives me a whole # of 1

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Check the mode settings. Press MODE. On the first line highlight NORMAL and press ENTER. On the second line highlight FLOAT and press ENTER. Press 2ND [QUIT] to exit.

Posted on Sep 30, 2010

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How can I round 0.4678476 to the nearest dollar?

When rounding, we always look at the number in the position directly to the right of the position we are interested in. In this case, the whole dollar is the number immediately to the left of the decimal, so we look at the number immediately to the right of the decimal. If this number is 5 or more, we add 1 to the number to the left of the decimal. If the number to the right of the decimal is 4 or less, we do not add 1 to the number to the left of the decimal.

In this case, the number is 4, so it rounds down to 0.

Good luck,


Feb 16, 2016 | Office Equipment & Supplies

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Hi, I have a Sharp ELW535 Calculator and by accident I changed the mode that it is in... so now it gives me a fraction answer and not decimal. Ex, I put in 52/48 it gives me 1 1/12 Do you know how to fix...

There is nothing to fix as what you describe is not a flaw, it is a feature. You calculator has a key marked CHANGE between (x,y) key and ) key. To change a result from fraction to decimal or from decimal to fraction, you press the CHANGE key.

Sep 05, 2011 | Sharp ELW535 Calculator

1 Answer

Chaning the decimal place???

If you are changing the decimal place on a calculator you must multiply by a factor of then.
For example. If you have 500 and want 5000. You must multiply by 10 to get the calculator to show you 5000. You can add more 0's after the 1 to have a higher value

On the other hand, if you have 500 but you want 50. You need to multiple by .1 .You can add more 0's before the decimal point to get a smaller value.

Jun 15, 2011 | Texas Instruments TI-34II Explorer Plus...

1 Answer

What is the default setting for the f cut 5/4 and the 4320 add 2 I don't know what to have these options set at thanks EW Seattle

The selector you are asking about is the "decimal selector". The result displayed/printed, will be in a format according to the position that you have selected as follows:
f = floating (the result will be in the number of decimal places that were entered on the keyboard
4= fixed 4 decimal places (x.0000)
3= fixed 3 decimal places (x.000)
2= fixed 2 decimal places (x.00)
0= fixed 0 decimal places (x)
add 2= (add mode*,fixed 2 places) ($.00)
Note* "ad mode" automatically enters the decimal place when entering the number on the keyboard. If you enter "123", the displayed ammount will be "1.23". If you enter "1", the display will read ".01". This is a useful setting when adding a list of numbers in a dollars/cents format, however, be careful, if entering a whole dollar ammount "three dollars" be sure to enter the decimal point, or enter the number as "300". If you don't, the result will be ".03", instead of the 3 dollars you intended.

May 20, 2011 | Royal 29307U Calculator

1 Answer

Whenever I try to add or subtract a number with a decimal in it, when I press the + or - key, it rounds the number I entered either up or down to the nearest whole number.

You have the calculator set to round everything in the display to zero digits after the decimal point. To change this, press SHIFT [DISP] and then a digit representing the number of digits you want to the right of the decimal point.

Nov 09, 2010 | HP 10bII Calculator

1 Answer

How to turn printing on and off?

PRINT KEY: To save paper you can only print what is displayed, even in non-print mode. Pressing after the entry of a number will print the entry with the symbol “#” even in non-print mode. Pressing will insert a separator into a number entry such as a code, date, etc. Separators are displayed as a period and dashes but printed as periods. MEMORY + KEY / PRINT ON / OFF KEY: Pressing selects print mode or non-print mode. Cause the calculator to operate in a display / print or display only mode, depending upon the calculator’s present state. “P” on the display: Print mode. “NP” on the display: Non-print mode. MEMORY – KEY / DECIMAL SELECTION KEY: Pressing sets the number of decimal places in the result. “F” on the display: The answer is displayed in the floating decimal system. “3, 2, 1, 0” on the display: Presets the number of decimal places in the answer. “A” on the display (Add mode): The decimal point in addition and subtraction entries is automatically positioned to the 2nd digit from the lowest digit of entry number. Use of the add mode permits addition and subtraction of numbers without entry of the decimal point. Use of , and will automatically override the add mode and decimally correct answers will be printed.

Aug 18, 2010 | Sharp EL-1611P Calculator

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When I divided a problem EX. 3/2 the calculator will not answer in decimal

You are not dividing problems, you are dividing number. This said, there is a simple way to ensure that the results of divisions are displayed in decimal form: It consists in putting a decimal mark (decimal point) at the end one integer (whole number)
3/2. gives 1.5
3./2 gives 1.5
3./2. gives 1.5

You can also configure your calculator to display all numerical results in decimal format. To do that press [MODE][F2]. Use the down arrow to select the ligne Exact/Approx, then use the right arrow to unfold the menu options 1:Auto
Select 3:Approximate and press [ENTER]

Hope it helps.

Nov 15, 2009 | Texas Instruments TI-89 Calculator

1 Answer

Percent to chemistry problems.


You should ask a question, we cannot guess what you want.

Percent means per 100 or 1/100. So 75% = 75/100 or 0.75. Here are some exemples of percent calculations with %

Percentage (5% of 250)

250 [x] 5 [2nd] % [=] gives 12.5

Ratio (Ratio of 250 to 5)
250 [/] 5 [2nd] [%] [=] gives 5000.

Add-On (5% add-on of 250)
250 [+] 5 [2nd] [%] [=] gives 262.5

Discount (5% discount of 250)
250 [-] 5 [2nd][%] [=] gives 237.5

Some percentages and decimal equivalents
1 = 100% ; 2 = 200%, 3=300%
0.5 = 50%
0.4 =40%
0.1 = 10%
1/3= 0.33333 = 33.33%
1/4 = 0.25 = 25%
2/3= 0.66666 = 66.66%
1/5 =0.2 = 20%
1/8 = 0.125 =12,5 %
Hope it helps.

Nov 03, 2009 | Texas Instruments TI-30XA Calculator

2 Answers

I need to convert decimals to fractions

Press [MATH][1:ToFrac] to convert an aswer to fraction.
If you enter 18.52[ToFrac] [ENTER gives 463/25

[MATH][2:ToDEC] converts a fraction to a decimal number.
Hope it helps.

Sep 22, 2009 | Texas Instruments TI-84 Plus Silver...

2 Answers

My TI-89 cant do simple calculations.

You have to set how the calculator handles numbers. To do this follow these steps: 1. Press the 'MODE' button. This brings up the calculator's main settings page. 2. Scroll down until you reach a field titled 'Exact/Approx...'. This is the setting for how the calculator handles numbers, whether it will show the exact answer (which is usually in fraction format) or whether it will show an approximate number (which will be in decimal format). 3. Press the right arrow which will bring up the options for that setting. You must now choose between three ways of handling numbers: -'1:AUTO' will determine which type of answer the calculator will give based on what numbers you want it to calculate (e.g. if you want an answer in decimal format just add a decimal somewhere in your problem). -'2:EXACT' will automatically display all answers in either whole number format or in fraction format. -'3:APPROXIMATE' will automatically display all answers in decimal format. 4. After you have selected one of those options press enter one more time to get out of the 'MODE' dialogue and return to the 'HOME' screen. Now try a problem and see what happens. Personally I like using 'AUTO' because then I don't have to keep returning to 'MODE' when I want either or. Hope this helped, I had the same problem when I first started using the TI-89.

Sep 18, 2007 | Texas Instruments TI-89 Calculator

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