Question about HP 10s Scientific Calculator

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The problem is 5.00x10^9 / 32.065 = my answer appears as 155,933,260.6 i want to set my calculator to giv my answer as 1.559x10^8 please help.

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Press MODE until the setting screen showing "Fix Sci Norm" appears. Press 2 to select scientific notation, then select the number of digits you want after the decimal point.

Posted on Nov 04, 2010

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I am changing something from grams to moles using Avogadro's number. When i put it into the calculator, I get the wrong answer. I have set up the problem correctly and I have an answer key. Do i need to...


Why not tell us what you are trying to do?.
n= number of moles
m= mass in g.
M= atomic or molar mass (in g/mol)
n=m/M (in mol)
To enter Avogadro's number you use the EE (*10^x) or Exp
6.02 [EE]23 No 10 should appear.
To calculate the atomic/molar mass use the Periodic table.

Oct 30, 2013 | Texas Instruments TI 30XIIS Scientific...

1 Answer

F (x) keeps appearing on the screen


You do not specify what model and make of calculator you have, so the answer may not be applicable. However on some Casio calculators the f(x)= shows on the display when the calculation mode is set to TABLE. To exit the table mode set the mode to COMP.

Dec 03, 2012 | Office Equipment & Supplies

1 Answer

I get the wrong answers when i'm trying to calculate sinus tasks. ex: sin 41 = -.9165215479 and the right answer is: 0.66 why?


I have no idea where you got that particular value of a sin (41).
At first I thought you might have been using the radian as angle unit, but that is not the right answer. I tried cos (41 radian) and I got -0.9877392775.

Any way, when you are using angles you must select that appropriate angle unit ( appropriate to your problem, that is).

I suspect you need the angle unit to be set to degrees. If you do you will find that sin (41 degrees)=0.656059029 which is close to the rounded up value you call the "right answer".

To set the angle unit to degrees
  1. Turn calculator ON
  2. If you see no icones, press the [MENU] key.
  3. Use arrows to highlight the RUN icon or press 1.
  4. In RUN screen, press [SHIFT][MODE] to enter the (SetUp)
  5. Press the down arrow 4 times to move highlight to the line Angle.
  6. From the three tabs that appear at the bottom of the screen, select the one labeled Deg ( by pressing the F1 key) and press [ENTER.]
  7. Calculate the sine with the angle unit set to degree and you will get the value you are expecting.

Nov 23, 2010 | Casio FX-9750GPlus Calculator

1 Answer

Casio fx 992s when i try to do simple calculations like 1.33360 - 1.33041.....the answer is 3.19 and other little numbers in the top right. i dont get this or like this. i want a proper 5 decimal...


It sounds like you need a manual for your calculator. You can download a scanned copy here, and it will explain what all the keys are for. For now, here is the way to set the calculator for a five decimal place display:
  1. Press the MODE key three times. A menu offering choices of FIX, SCI or NORM will appear.
  2. Press the 1 key to select FIX mode. The message "0~9?" will appear.
  3. Press the 5 key. This tells the calculator to display five digits after the decimal.
This mode setting will hold until you change it to something else, or when you turn off the calculator.

Spend some time reading the manual and work with the calculator. It's a powerful tool with a lot of capabilities. Thanks for using Fixya!

Oct 08, 2010 | Office Equipment & Supplies

1 Answer

Scientific notation when not wanted.


Unfortunately, you don't. For numbers whose magnitudes differ too greatly from 1, the calculator automatically switches to scientific (or engineering) notation. You can press MODE and change the display settings, but there is no setting that will force the calculator to show this number without an exponent.

Feb 25, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

TI-89 decimal to fraction


Here is what you do:

1) Press the Mode button.
2) Scroll down the list that appears until you find "Exact/Approx".
3) Change the setting for "Exact/Approx" to Exact.
4) Press enter to save the settings change.

You have three possible settings for "Exact/Approx":
1) Auto - The calculator will try to determine the best format.
2) Exact - The calculator will always give the answer in fraction form.
3) Approximate - The calculator will always give the answer in decimal form.

Nov 15, 2009 | Texas Instruments TI-89 Calculator

1 Answer

When I divide the answer is in fraction form not decimal form how do i get it back


There are two options.

1) Whenever you want the answer in decimal form, place a decimal after at least one of the numbers.
For example: instead of using (1/2) use (1/2.)

2) Press the "Mode" button. Scroll down the list that appears until you find "Exact/Approx". If you set it to "Approximate", then it will always give the answer in decimal form. If you set it to "Exact", it will give the answer in fraction form.

Nov 12, 2009 | Texas Instruments TI-89 Calculator

1 Answer

Setting tax %


I Finally figured it out after playing with it for almost 1/2 an hour!

Hit 2nd then Tax + (rate set) it will appear as 0.000 enter your tax rate... mine is 5% so I enter 5.0 then hit 2nd and Tax + (rate set again) And it will work!

It is glorious!!!

Answered By James Soltys from: Edmonton, Alberta Canada

Dec 18, 2008 | Sharp EL-1701C Calculator

2 Answers

Who Repairs them?


calculators are repaired in watch works...they will give u a better service for calculators...if it s scientific calculators..then giv it to the computer service providers....but usually there s very few service providers can been seen for repairing the calculators...since it doesnt cost much!!!!

Dec 06, 2008 | HP 19BII Calculator

2 Answers

Changing result display from fractions to decimals


Struggled with this and found answer on about page 19 of the instructions on the Internet. Answer also appear on paper instructions under: "Displaying Calculation Results...etc just under "Note" Trick is you must have calculator in "LineIO" mode For setting MODE see "Calculation Modes & cal. Setup in paper instructions.

Jul 09, 2007 | Casio FX-115ES Scientific Calculator

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