Question about Casio FX991ES Scientific Calculator

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BROKEN screen of CASIO FX992ES Scienctific calculator

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Posted on Jan 02, 2017

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SOURCE: I need to know how

The "problem" is not how to calculate with numbers expressed in Scientific Notation but how to enter a number given to you in scientific notation. Once the number is entered you do not have to do anything special. If you have to multiply it use the (x) button. to add it use the + button, etc.

How to enter a number in scientific notation.

Type in the mantissa (example 6.022)
Press the [X10^x] at the bottom of keypad.
Enter the exponent (example 23)
with this example you will have entered Avogadro's number 6.022x10^23
Other example
1.6 [X10^x] (-) 19 enters the electron charge in Coulombs. The exponent is negative that is why you press the change sign key (-).

Posted on Sep 03, 2011

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You directed this question at me but unfortunately I'm unable to provide you with a "real" solution at this time. FixYa has informed me that by providing you with this "solution" your question will then be made visible to other experts; hopefully one of them will be able to provide you with a real solution.
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I need to know how to divide, mutiply, add, and substract in scienctific notation on my Casio fx-300ES


The "problem" is not how to calculate with numbers expressed in Scientific Notation but how to enter a number given to you in scientific notation. Once the number is entered you do not have to do anything special. If you have to multiply it use the (x) button. to add it use the + button, etc.

How to enter a number in scientific notation.

Type in the mantissa (example 6.022)
Press the [X10^x] at the bottom of keypad.
Enter the exponent (example 23)
with this example you will have entered Avogadro's number 6.022x10^23
Other example
1.6 [X10^x] (-) 19 enters the electron charge in Coulombs. The exponent is negative that is why you press the change sign key (-).

Aug 24, 2011 | Casio fx-300ES Calculator

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I have an Casio fx-300ES, and im taking an honors physical science class and i need to know how to divide/multiply/add/subtract in scienctific notation. For example: 6.25x10(to the negative 4) / 4.1x10(to...


All you need to know is how to enter a number in scientific notation. As to the operations you do them the usual way: For example, to multiply you enter a number (in any notation) press the multiplication key then enter the second number (in any notation) and press the = sign to get the result.

The problem is that the result may not be in scientific notation format. But for that you can configure the calculator to always show results in scientific format. Here is how to force that. Press [SHIFT][MODE] to enter (SetUp). In the screen that displays enter the number for the option SCI. You will then be prompted to specify the number of decimal digits. You will enter a number between 0 and 9. If you select 0 you will not have decimals in the result, and if you enter 9 you will have 9 decimals. What is the appropriate number of decimal place to keep in the FINAL result will depend on the number of significant digits in the measuremnets.

To enter a number in scientific notation (ex: 6.25x10^(-4))
You enter the so-called mantissa 6.25
You press the key at the bottom of keypad that is marked as [X10^x]
You enter the change sign (-) followed by the exponent 4

If your calculator is in MathIO you will be able to verify that what was entered is exactly what was neant. In MathIO, you move cursor up or down using the Up or Down arrow. When you finish entering the exponent you use the right arrow to bring cursor to the main level.

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A blue line appeared on the calculator when I changed batteries and now it will not turn on. What is the problem


Sounds like you probably dropped the calculator and it broke. The line that you spoke of is a common problem that is seen when calculator's take a fall. Seems like when it first fell, the screen broke a bit. And then from moving around and stuff, it's completely broken. I would contact Casio and see if they have a store that you can bring it in to get it checked out. Sorry. Hope this helps...
Please rate my solution
- Frankie

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My screen is broken can i get it fixed?


Hi Jimbo_Hathaw,
Regarding about your broken Casio FX-9860G Graphics Calculator, i would recommend you to find a Casio service center in your area, if so you need to go there with the broken Casio along with your receipt. depending on the amount of damage which has been occurred to the screen charges may be applied to getting it replaced.

Casio Service Center :

www.casio.com

( click on your area and search for the service center's number in your specific area )

if you are how ever unable to find the service center in your area then the best option is to find an electronic store in your area. bring your calculator there and ask them whether they can fix the issue with the broken screen.

I hope i've given you insight about fixing your calculator, if there is any questions you have please contact me.

good luck!

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I suppose they can be replaced. You should contact the TI Consumer Support Department at ti-cares@ti.com. They will be able to tell you where in your area of residence you can have the calculators serviced and how much It will cost you.

I have heard about a Casio program that gives credit towards the purchase of Casio calculators in exchange of TI calculators. Here is the link to the trade-in program.
I believe it is worth investigating this. You may end up replacing the calculators at a lower price. Casio calculators are very good and less expensive than the TI. You will be surprised to hear that Casio is the inventor of the LCD screen.

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Yeah I had the same problem, you need to open your calculator and check if all the screen cables is alright, i had just put sellotape on the back of the screen from inside so that the screen hold better, and it works for me if for you not maybe something broken in the schema but try it. The thing I know for sure the problem is in the screen or from where it get the data the schema. Tell me if it's working

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