20 Most Recent Texas Instruments TI-30XA Calculator Questions & Answers

I'm assuming the lack of a response means using the proper key did the trick.

Texas... | Answered on Feb 16, 2020

I had the same issue.

  1. Open up the calculator.
  2. Remove the battery.
  3. Remove the two screws holding the display section down.
  4. Carefully pry the button circuit board up and remove it.
  5. Use an electrical cleaner and lint free cloth to wipe off the button circuit board.
  6. Re-assemble and test.
For me, cleaning off the button circuit board restored all buttons to working order. When it is disassembled, and after cleaning, you could flip the board, display, etc. up and out of the case and test to see if it works as well.

Texas... | Answered on Nov 06, 2019

You add them normaly, not worrying about the display until the final result. Then you press [2nd][c/d] and it will converted.
Hope it helps

Texas... | Answered on Feb 05, 2019

The following examples will demonstrate how to convert decimals into fractions using the TI-30Xa and TI-30Xa Solar. Please be aware that TI-30Xa Solar School Edition calculators do not have this functionality.

Example: Convert .25 to 1/4
- Input .25, press [2nd][<--] (says F<>D above it).

** F<>D means fraction to decimal, decimal to fraction.

Example: Convert 1.38 to 1_19/50

- Input 1.38, press [2nd][<--].

Example: Convert 9.75 to 9_3/4

- Input 9.75, press [2nd]{<--].

Texas... | Answered on Sep 26, 2018


Ex: calculate -log(15.32)
  1. Calculate the log 15.32 [LOG] [=] result 1.185258765
  2. Then press the change sign key (-) result -1.185258765
You can also try 15.32 [LOG] (-) [=]. Try to veriufy it on your calculator.

Here is a picture of the change signd677d4e.jpg
Hope it helps

Texas... | Answered on Mar 08, 2018


Texas... | Answered on Dec 04, 2017

Press the STO key followed by one of the digits 1, 2, or 3 to store the number in the display to one of the three memories.

Texas... | Answered on May 16, 2017

That depends on how much gold you have. 24k merely indicates that the gold is pure, without any other substances mixed in. It refers to the purity, not to the total amount. If you have one kilogram of 24k gold, you have one kilogram of pure gold. If you have two kilograms of 24k gold, you have two kilograms of pure gold. If you have two kilograms of 12k gold, you have one kilogram of pure gold and one kilogram of something else.

Texas... | Answered on Oct 29, 2016

Why do you want to get out od Degree mode. If you are doing trigonometric calculations, the angle unit is pertinent. If you are not doing trigonometry, it is irrelevant. You say you can cycle through DEG, RAD, GRAD. That is the way to set the angle unit.
However, there will always be an indicator on the screen (DEG, RAD, or GRAD).

Texas... | Answered on Mar 14, 2016

To clear any memory, store the value 0 in it.

Texas... | Answered on Feb 11, 2016

How can you graph equations (functions) if you do not have a graphing calculator?

Texas... | Answered on Feb 11, 2016

A rectangle is a 2D figure and is not a solid. Its area is the product of one side by the other side. Area =length*width.

Texas... | Answered on Feb 11, 2016

Change the computational mode.

Texas... | Answered on Jan 30, 2016

On the bottom of the calculator near the zero and the enter key it has the symbol (-) that is a negative number symbol

Texas... | Answered on Jan 16, 2016

Panasonic LR-44, Ray-Ovac RW-82, Union Carbide (Everyready) A-76 work on this calculator.

Texas... | Answered on Dec 01, 2015

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