Casio MS-80TV Scientific Calculator - Answered Questions & Fixed issues

To set the BD-9512 (Staples Big Digit Tax Calculator) 1. Press ON/AC 2. Press and HOLD the RATE button (for 2 sec) 3. Enter desired Tax amount (i.e.: enter only 13 for 13%) 4. Press TAX + (or TAX - if setting the minus button) 5. Press RATE to save it. Violia!

About 33.4%

The issue is the fact that you are adding the %. You need to Multiply it by 1.1 instead of trying to add 10%. This is a wonky equation anyway, because your not specifying what you want to add 10% of. This is why you are getting a weird answer.

125 is 125% of 100.

65 is 64% of 101.5625 .

About 33.9%

Turn the calculator over. Look for some small screws that fasten a 1 or cover to the body of the calculator. Loosen the screws and remove cover. You should find button cell batteries. Before removing them make a note of the sign you see on the batteries (+ or -) while they still in place. Replace the batteries with the same model or equivalent ones. Replace the cover. For more detailed instructions consult your calculator's manual.

Which manual are you referring to?From page E-47 of the fx-115ES manual at http://www.fixya.com/support/p480502-casio_fx_115es_scientific_calculator/manual-19877, you clear the stat data by pressing SHIFT 1 3 2 while in the stat mode.

Dear Plz try this 100 X 45% then press + and u will get the ans 145.

h beam 200*200*8*6 weight

Percent simply means "out of 100", so one half (ie 0.5) needs to be multiplied by 100 to give 50% (for example).Your calculator may have a percentage function (usually on the equals sign but you will need to refer to the instructions to check how it works.

389.

I don't think the calculator has that function, but what you can do is round on your own. If the decimal .005 or greater, you'd round it up to .01. Simple as that!
Hope this helped.

press AC
HOLD set % (but do not let go until screen turns off and back on again-5 seconds)
press tax+
type rate ie 20 for 20%
press set%
press ac

check it by typing 100 and tax+ should be 120

Try to switch off it and switch on again. If the problem still persists then go to the near by calculator shop and get it fixed

How do I change the tax rate on my calculator MS-8TV

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

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/%]


Printing models (except HR-8TE):

1. Have calculator in "print" mode
2. Press [CA]
3. Hold [SET/%] key for about 3 seconds
4. Input the tax rate
5. Press [TAX+]
6. Press [SET/%]

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

Please try the following...

Press AC twice. Hold down % set key for about 2 seconds until ?0? disappears on screen, then reappears. Press Tax Rate key. Input tax rate (12.5%) and press % set key. If this does not work, search for your model number here on Fixya and you will find other solutions posted. Good Luck!