Question about Texas Instruments TI-83 Plus Calculator

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Can I see what people did with my calculator.

There was a girl in my class who used my calculator to write a message to another girl and I want to know if I can see what she wrote. Thanks

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Re: Can I see what people did with my calculator.

Your question is slightly vague... i know how she typed the mesage she pressed the 2nd key then the alpha key which puts the calculator into alpha lock mode... and after that she typed the message, however to my knowlege ther is no way to see a calculator that you are not holding in your hand or connected to with the cord... another problem you will have is most of the time one types something into an 83 after they hit enter it gives an error mesage saying something along the lines of "too few arguemnts" or "invalid expression" or something of the like and it doesnt save to the ram so finding out what she typed will be hard to do unless she shows you after she types it...

Posted on Jan 20, 2008

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User guide for calculator class pad 400

Casio lists a Class Pad II (FX-CP400). The manual for this is available on the Casio calculator manuals page: . You'll need to accept the Terms of Use to see the full list of manuals. The direct link to the manual is . On Casio's "At a glance" page for this calculator, it is simply called the Class Pad fx-CP400.

I hope this helps.

Cindy Wells

Jun 12, 2016 | Calculators

1 Answer

Of 400 students 180 are girls,what percentage are girls?

There are 45% Girls...


Nov 14, 2015 | Calculators

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Of 400 students,180 are girls.what percent are girls

Hi Charles:
"percent" means "per hundred" (times 100).
180 girls
400 students
girls of total..........
180 divided by 400
percent (times 100)
On your calculator...........
divided by
400 display 0.45
= answer displayed 45
So, 45% are girls
To check your answer, you can
Display will show 180
Ta Da!

Nov 14, 2015 | Calculators

1 Answer

How do you set decimal places?

To halt the calculator and reset the keyboard, follow the procedure below:
  1. Press and hold the [C] key.
  2. Press and hold the third key from the left on the top row.
  3. Release both keys at the same time.
  4. The calculator will now display "0.00" (if the number of decimal places is set to two.)
To completely reset the calculator and erase all user memory, follow the procedure below:
  1. Press and hold the [C] key.
  2. Press and hold the first key from the left (the N key) and the first key from the right (the sigma +) on the top row. Release all three keys at the same time.
  3. You should see "ALL CLr" on the display.
  4. Pressing the [C] key will clear the message.
  5. The calculator will display "0.00."

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Feb 09, 2011 | HP 20s Calculator

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There are 40 pupils in a class .twenty five of them are boys.what is the ratio of boys to girls?

If there are 40 total students, and 25 are boys, then (40-25) of them are girls, or 15.
That means the ratio of boys to girls is 25 to 15, or 25/15
This can be simplified by dividing by 5, so the ratio is 5/3

Jan 16, 2011 | Calculators

1 Answer

There are 40 pupils in a class.twenty five of them are boys.what is the ratio of boys to girls?

If there are 25 boy in a class of 40 pupils, there are 40 - 25 = 15 girls. The ratio of boys to girls hence is 25:15, or as reduced fraction 5:3 = 1.6666...

Jan 16, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

Is there a cost effective way to run class sets of TI-84's? It has become increasingly expensive each year to keep our calculators running with regular batteries.

There is a way, and that is to use rechargeable batteries. Panasonic boast that their eneloop brand can hold 80% of the charge for a full year (if not used) Also, do not allow students to transfer 3rd party programs that they can play with in class. The 3rd party programs may be ill-designed and may (intentionally) bypass the native power saving feature of the calculator.

Another suggestions that will win me no fiends is to either charge the students a default yearely fee or to ask them to bring their own batteries. This will reduce the attrition of stolen batteries.

Apr 08, 2010 | Texas Instruments TI-84 Plus Calculator

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If there are 623 students and the ratio of girls is 2 to 3 boys. how many girls are there?

The best way to solve this is to develop one or more equations and then solve for the unknown numbers.

I solved this problem twice using different sets of equations to make sure I was right, and here is what I found:

1) I used the equations x + y = 623, and x = (2/3)y. In these equations, x is the number of girls and y is the number of boys.
Substituting the second equation into the first, I get (2/3)y + y = 623.
Adding the left side together I get : (5/3)y = 623.
Dividing both sides by (5/3) I get 373.8.
This means that x (the number of girls) is 249.2.

2) For the second attempt, I developed the equation: 2x+3x=623. Here 2x is the number of girls, and 3x is the number of boys.
Adding the left side I get: 5x = 623.
Dividing both sides by 5 I get: x = 124.6.
This means that the number of girls (2x) is 249.2. Just like in the first method.

But since you can't have a 1/5 of a girl, the answer must be 249 girls.

Nov 19, 2009 | Calculators

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Half-life exponential problem. Can't get the same answer as example

Here is how you enter it.
[+/-]0.693/8x4[2ndF][e^x][=] result is 0.7071588193 or as you wrote 0.7071
some calculators show an error message if you enter the [+/-] (the negative of a number before the number itself).
In that case enter 0.693 then press [+/-]. the calculator should put a small - sign before the 0.
You can try

Hope it clarifies things.

Sep 16, 2008 | Sharp EL-531VB Calculator

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