Question about Office Equipment & Supplies

# CASIO ms-7TV Hi, just wondering if you can help me. We have two casio MS-7TV calculators at our office... some of the settings must be wrong but we can't figure out how to change them. We've got the tax set right, but when we try to do a calculation adding or subtracting an percent (not using the tax button) the calculation is wrong (ie. 66 + 50% it comes up with 132 OR if I go 66 + 100% it comes up with 0 and the E sign on the left side.) Help!? We use the percent button alot in our office...how can I fix this?

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• Anonymous May 20, 2009

i want to change the tax number

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• Contributor

To change the task number you must press and hold % (rate set) for 3 to 5 seconds, should appear tax XX %, now type your tax number and press % again and AC. To test type "100" press TAX + and the result should be 110, if your tax rate is 10% for example.

Posted on Aug 13, 2010

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I had the same problem, so I read another casio manual, as I couldn't find one for this model and found this solution. Do the calculation like this 66 x 50 % + or 66 x 100 % +
As for changing the tax rate + - buttons, I have no idea.

Posted on May 24, 2009

• amarais Oct 12, 2010

It's working when you add the % , but when you subtract the % , it's incorrect. 100 - 15% should be 85 and not 86.96

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Posted on Jan 02, 2017

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hold % button the button with rate set for a few seconds and wait until you can change the rate.

Jul 29, 2010 | Casio MS-80TV Scientific Calculator

### 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 :-)

Aug 12, 2009 | Casio Office Equipment & Supplies

### MS-80TE HOW CHANGE TAX?

From CASIO FAQs:

How do I program tax rate into my calculator?

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### Casio seem to have a problem with the percentage key

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Jun 20, 2009 | Casio MS-80TV Scientific Calculator

### Casio calculator ms-8t

hi

after turning on hold RATE SET button (%). type in the tax rate you want. then press RATE SET button again.

sorted.

ian

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### My casio MS-TE caculates 100+5%=105.26315,not

From CASIO FAQS:

Why do I get the wrong answer when doing a percent calculation?

Make sure that you are following the correct procedure.
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Subtract 10%: 200 [×] 10 [%] [-]

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### Casio MS-120TE tax rate

How do I program tax rate into my calculator?
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
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### Casio MS-120TE tax rate

Found this on the casio site worked fine on my ms-120TE
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