Question about Texas Instruments TI-30XA Calculator

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HELP, I can't seem to figure out scientific notations with my Texas Instrument TI-30XA. I've searched for hours on the web. Here's the problem: 7.82 x 10^10 / 63.55 = 1.23 x 10^9. But when I input 7.82 x 10 EE 10 / 63.55 = 1.23 x 10^10. I keep coming up with an extra ^10. What am I doing wrong?

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Hello,
The error comes from the lack of understanding of the meaning of the notation used by the calculator manufacturers.
The [EE] is a "shorthand" notation for times 10 to the power of .
To convince you of it try entering

1[EE]0 [=] this is 1*10^0=1*1=1
1[EE]1 [=] this is 1*10^1=1*10=10
1[EE]2 [=] this is 1*10^2=1*100=100


When you enter 7.82x10[EE]10
you are calculating
7.82*10*1*10^10=7.82x10^11.

Hope it helps.

Posted on Nov 13, 2009

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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.

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Is there an EE button for scientific notation of TI-30XS


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On a TI-30XIIS the EE is the shifted function of the key just above the 7 key.

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To enter powers of 10 as in scientific notations use the EE key.
To enter 13x10^6 type in 13 EE 6 =

For a manual here is the link

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What is each button used for?


Download the guidebooks from the manufacturer's web site at http://education.ti.com/educationportal/downloadcenter/SoftwareList.do?website=US&tabId=2&paneId=18#

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I have a TI-30XS Calculator and cannot figure out why the thing won't work when I try to divide numbers with scientific notation. The calculator appears to be adding exponents when it should be...


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Aug 28, 2009 | Texas Instruments TI-30XA Calculator

1 Answer

Inputing scientific notation into my calculator


Hello,

1. To convert a number to scientific equation, use [2nd][Sci]
Exemples 12345 [=] screen shows 12345 Then [2nd][Sci] coverts it to 1.2345 ^04 to the power 4.
2. To enter directly a number in scientific notation (e.g. -1.2345 X10^(-65) a very small number) you use the [EE] key 1.2345[+ /-][EE][+/-]65 shows as -1.2345 -65
1.6X10^(-19) 1.6[EE][+/-]19 shows as 1.6 -19

Hope it helps

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1 Answer

Inputing Scientific Numbers


If you mean using the "EE" key it's straightforward.

To enter scientific numbers, enter the number, then press EE, then the exponent value. The TI-30XA will stay in scientific display until you "clear" or turn it off. It will also switch to scientific notation if you multiply big numbers that exceed the display.

E.g. Input 3, EE, 10, X, 3, EE, 10, =, gives you the answer 9 times 10 to the power 20. Press the "square root" key and you will get back 3 times 10 to the power 10.

You can mix entries too, e.g. 3, EE, 10, X, 2, =, gives you 6 times 10 the power 10....

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