Question about Texas Instruments TI-83 Plus Calculator

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Hi i have a ti 83 and everytime i input just small stuff like addding and subtracting the answer shows up with the answer and e0. not always the right answer. say 376-217.3 158.7E0 is the answer i get. and if i were to square that answer it would give me 25.18569E3 i need to know how to fix it or if thats just the way this calculator works. I don't have an instruction manual, it was given to me by a friend. tried looking it up on google but got confused.

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Your calculator is set to display results in engineering notation, where the exponent is always a multiple of three. To change the display notation, press the MODE button. Use the arrow keys to make your selection. You probably want to highlight "Normal" on the top line, press ENTER, highlight "Float" on the second line, press ENTER. Press 2ND [QUIT] to exit the mode screen.

You can download the manual from the manufacturer's web site at$book-eng.pdf

Posted on Mar 31, 2011


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I have a TI-86, whenever i input - it shows Ans- and then it show that is an error. how can i fix it.

The - key is for subtraction, an operation that needs two numbers. If you press - as the first key on a line, the calculator assumes you want to subtract something from the previous answer, Ans.

If you want to enter a negative number, use the (-) key on the bottom row of the keyboard, just to the left of the Enter key.

Apr 05, 2016 | Texas Instruments TI-86 Calculator

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Answer always appearing

Minus and change-sign are two completely different things. Minus is used to subtract one number from another. When you press minus when the input line is empty, your telling the calculator to subtract. The only way it can subtract the number you're about to put in is to subtract it from something else, and that something else is the previous answer, hence the "Ans."

If you want to input a negative number, use the change-sign key. If you want to subtract one number from another number, use the minus key.

Try pressing the plus key when the input line is empty. You'll get Ans+ in this case as well, The same with multiply and divide, among others, and for the same reason.

Sep 23, 2013 | Texas Instruments TI-84 Plus Calculator

1 Answer


Expand (carry out the multiplications on the left-hand side):
28-3.5x + 7.28-2.6x = 13.93

Collect similar terms:
35.28 - 6.1x = 13.93

Isolate the unknown (subtract 13.93 from both sides, and add 6.1x to both sides):
21.35 = 6.1x

Divide both sides by 6.1:
I'll let you do this step by yourself. If this is homework, make sure you show your work.

Oct 13, 2012 | Texas Instruments TI-83 Plus Calculator

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Inputting to get the answer of lnx=-5 How do you input that in the Ti-83

You're looking for a number whose natural logarithm is -5. In other words, you're looking for the natural antilogarithm of -5. To calculate this, press
2ND [e^x] (-) 5 ENTER

Apr 30, 2012 | Texas Instruments TI-83 Plus Calculator

1 Answer

How to add and subract

To add 3 and 5 on your calculator, start off by making
sure all is clear with no numbers showing in the display.
Push the 3 key, then push the + key, then push the
5 key, then push = . The answer should appear.
To subtract repeat the above process but push the
minus (-) key in place of the + key. If you subtract
5 from 3 you will get a negative (-) number 2.
Does this solve your problem? If not, ask your
question again but in a different way.

Aug 29, 2011 | Texas Instruments TI-5045 SVC Calculator

1 Answer

Every time i try to find the sum of any solutions it always give me and answer with like an E1 or E0

You have scientific notation turn on. To restore the calculator to its default display mode, press the mode key. Use the arrow keys to highlight "NORMAL" on the top line and "FLOAT" on the second line, then press ENTER. Press 2ND [QUIT] to exit the mode screen.

May 12, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

How do i program my calculator to add, subtract, divide and multiply imaginary numbers and get the correct answer?

Press MODE to bring up the mode screen. Use the arrow keys to move down to the line beginning "Real". Highlight either "a+bi" or "re ^ theta i" depending on whether you want to work in rectangular or polar coordinates, then press ENTER to save the change. Press 2ND [QUIT] to exit the mode screen.

Feb 17, 2011 | Texas Instruments TI-83 Plus Calculator

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TI-83 Plus calculator--fractions

just type it in, e.g. 1/2 or 3/5. if you want to have answers display as fractions, press [MATH] ENTER.

May 07, 2009 | Texas Instruments TI-83 Plus Calculator

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TI-84 problems

Ok, if your trying to do something like this: 2+2=4 then make it continue adding by 2's (6,8,10...)
What you do is after you type 2+2 and press enter, you need to press the "+" and u should see it show this "ans+" then type 2. Then this should continue adding by 2's. Hope this helped.

Feb 28, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

Tring to subtract

With an adding machine, which is what this is, you enter the number followed by the + or -. If you wanted to add 10+20, you would enter 10 then + then 20 then +. This would show your answer. If you are using the printer and you wish to see the final answer on the paper, hit the * key and your answer will print.

If you are subtracting, let's say 100-40, you would enter 100 then + then 40 then - then *. Adding machines expect you to enter long strings of numbers to total. You may have both positive and negative numbers. So, you always enter the number first followed by either positive + or negative -.

You might have 100 + 25 - 37 - 1 + 50. For that enter:
100+25+37-1-50+ then *

Different than a calculator but the same for all "adding machines". This machine should really be called an adding machine since that is the kind of input it is looking for.

Jan 13, 2009 | Canon P23-DHV Calculator

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