Question about Texas Instruments TI-30XA Calculator

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My TI-30Xa circa 1995 has suddenly started rounding up on the 1/10 digit. How do I correct this or is my calculator fried?

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Press 2nd [FIX] then the number of digits you want to the right of the decimal point. [FIX] is on the decimal point key.

Posted on Nov 07, 2010

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Rounding display decimal


There isn't a rounding key as such. However you can control the number of digits displayed. See page 16 of the manual: http://www.fixya.com/support/p131668-texas_instruments_ti_30xa_calculator/manual-5027

Jan 21, 2014 | Texas Instruments TI-30XA Calculator

1 Answer

Ti 30xa commas


Correct. The 30Xa will not display commas.

Dec 13, 2013 | Texas Instruments TI-30XA Calculator

1 Answer

Convert square root to decimal TI-30XA


Press 2nd then F--D key(its means left arrow key or left key from zero)

Feb 23, 2013 | Texas Instruments TI-30XA Calculator

1 Answer

How do I get my TI-30XA to go this equation properly? When I do 10^-8.55 it returns as 0.000000003 when it should be 0.000000028....(something more like that). when i compare to my textbook for chemistry,...


You can put it in scientific notation by hitting 2nd and 5. It will put your answers in scientific notation and not round that particular answer you have.

May 10, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

Can i do sigma notation on a ti-30xa calculator?


No. There are some keys on the TI-30XA that may make you think so, but they are statistical operations. For example, you can enter values using the Sigma+ key and the TI-30XA can give you the sum of the values entered, sum of the squares, mean value, standard deviation and so on.

You cannot do calculations like "Give me the sum of all integers from 1 to 100" with the TI-30XA, you'd need a far more sophisticated calculator.

Jan 06, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

I have 55,50, 45, 42 as numbers then I hit the E key then 2nd then the oxn-1 key and get 5.71 is this correct ?


That is the correct value for the sample standard deviation for this data set. Well, personally I'd round the third digit up to get 5.72.

Oct 15, 2010 | Texas Instruments TI-30XA Calculator

2 Answers

Is there a function on the TI-30XA that will generate random nubmers?


No such function my ***!

Just click prb --> RAND randint(
If you want a random integer from 1 to ten, randint(1,10
Then you just keep clicking enter to get different numbers.

Dec 07, 2009 | Texas Instruments TI-30XA Calculator

1 Answer

My ti 30 calculator always rounds to the nearest number with the answer. How can i get this to stop????


Hi,
To stop the calcultor rounding your answers to the nearest INTEGER, press [2nd][FIX] followed by a number other than 0. For exemple
[2nd][FIX] 3 will display the numbers with 3 decimal digits.

Hope it helps.
Thank you for using FixYa.

Nov 24, 2009 | Texas Instruments TI-30XA Calculator

1 Answer

My calculator is rounding my answers up. For example, if I divide 5 by 2 the answer comes up as 3 instead of 2.5


Hello,
Increase the number of decimal digits. Here is a clipping of the guide to help you configure calculator. I hope it helps.

988ebcb.jpg

Oct 08, 2009 | Texas Instruments TI-30XA Calculator

1 Answer

Batteries


Unscrew the six small screws on the back with a small phillips cross head screwdriver (an eye glass screwdriver works fine), then carefully prise off the back using a flat blade in the two slots at the top of the calculator.

Keep it upside down or the display will fall out!

You'll see the two 1.5 volt alkaline batteries there, GPA-76 type (flat, round) in mine. Ease them out carefully and replace them, positive side up.

Alternative battery codes (manufacturer dependent) L1154, AG13, GA13, AG76, GP76A, 675HR, LR1154, LR44 per battery web sites, maybe others.

Make sure batteries are seated and display is in its correct position, replace back cover and six screws.

Caveat 1 : You can buy the TI-30XA for about $10-$13 at Staples/Amazon, two batteries will set you back around $5-$7!! But they last a couple years even with heavy use. TI-36X and TI-30X IIS are better calculators and have solar cells as well.....but about twice the price at $17-$25.

Caveat 2: I had one of these where the display faded, replaced batteries, did nothing because circuit board or display was bad. So you could replace batteries and waste the time/money.

Nov 19, 2008 | Texas Instruments TI-30XA Calculator

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