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Question about Casio MS-80TV Scientific Calculator

# Casio calculator MS-8TV

I am trying to do a normal calculation using the percentage button but this keeps giving me the tax how do i turn this function off?

Posted by on

• Anonymous Jan 11, 2008

There is no other button to hold down to get the % button to work. It does have a dual function, it says RATE SET above the % sign.

Not sure how to get the % button to actually work, very frustrating!!

• lleld Jan 27, 2008

I can't seem to calculate simple percentages. I don't want to set a permanent tax rate... just want to calculate varying percentages. Anyone know how to do this?

• MeMaw1961 Mar 12, 2008

change tax rate

• Anonymous Aug 07, 2008

I have lost my instructions on how to change my tax rate on my Casio MS-8TV, can you help?

• Anonymous Aug 22, 2008

just want to calculate varying percentages

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you hold your set % button down for three seconds until set shows again, then hit tax rate button it shows your tax rate, change your tax rate then hit set your tax rate should be set.

cliff notes:
hold set% button
hit tax+ button
change the desired %
hit set done

Posted on Jan 11, 2008

### Anonymous

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• Contributor

For normal % calculations, it works as follows:

100 x 5 % . . . the display should read 5

100 x 5 % + . . . the display should read 105 which is 5 added to 100

100 x 5 % - . . . the display should read 95 which is 5 subtracted from 100

The SET/% key is indeed dual function although SET isn't initiated until the button is pressed AND held down for a few seconds. When that is occurring, you display should be blank for those few seconds after which SET will be indicated on the display indicating it is ready for input.

otherwise, . . .

Make sure you are not in the SET mode. The display should be clear with nothing but 0 showing. You might also want to press AC before beginning calculations.

Posted on Jan 29, 2008

### Anonymous

HOW DO I SET THE TAX RATE?

Posted on Jan 07, 2008

### Anonymous

Posted on Apr 07, 2008

### john archer

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It sounds like the Percent key has a dual function. Thee should be a way to toggle the feature by either holding a function or 2nd key then pressing the percent key. Good luck. John

Posted on Jun 16, 2007

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## Related Questions:

### How change percentage (tax) rate on Casio-1100TV?

FINALLY figured out how to change the tax rate! Press AC. Press and hold the Rate Set (%) button UNTIL THE CURRENT TAX RATE IS DISPLAYED. Enter the new rate you want (such as 7.5). Press the Rate Set (%) button again.

### How to change tax rate on MS-8TV calculator

Hi there,

Press AC first, then hold down the RATE SET % button for 2 seconds, then input the rate and press RATE SET % button again

And you should be away :-)

### I am trying to set tax on the calculator, how do i do it?

Press
On/AC
Hold the Set% per 3 secons,
Press the green button TAX+
Enter the new tax rate # (9.25)
Enter SET %

### Change the tax rate on calculator on MS-8TV

you hold your set % button down for three seconds until set shows again, then hit tax rate button it shows your tax rate, change your tax rate then hit set your tax rate should be set.

cliff notes:
hold set% button
hit tax+ button
change the desired %
hit set done

Do rate the solution.

### RE: CASIO CALCULATOR MS-80TV

Non-printing models (also applies to HR-8TE printing calculator):

1. Press [AC]
2. Hold [SET/%] key for about 2 seconds
3. Press [TAX+]
4. Input the tax rate
5. Press [SET/%]

### Percentage button!!

they call it hardware malfunction. try removing all batteries in it and wait for 30 seconds before reinserting the batteries. If the same problem still exist, the unit is permanently damaged.

### Changing the % tax setting on my Casio calculator

step 1 pess the AC button step 2 press and hold for two seconds the % button step 3 press the tax+ button step 4 input 17­.5 step 5 press the % button that should be the tax set you can check it is set correctly by pressing the AC button and then the tax+ and 17.5 should be displayed

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