Question about Casio HR-100TEPlus Calculator

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How do I get this calculator to substract

I can not get the calculator to do simple adding and subtraction.It adds when it should subtract.

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Big calculators work a little different than handheld calculators. Like the above commentor explained, if you have a basic "whats 100 minus 20?" You have to entered as 100 + 20 -- And when you hit the minus button at the end, it will give you the total. 100 is the positive number, and the 20 is the negative number that your subtracting. Also you can hit 20 -- 100 + and get the same total because you entering 20 as the negative and 100 as the positive, just in reverse.

Posted on Aug 24, 2009

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You must enter the plus or minus sign after each entry
If you want to add 100 + 20 you would type:

100 +
20
*

If you want to asdd 100 + (-20) you would type

100 +
20 -
*

Download the manual here:
http://www.casionz.co.nz/Site/Pronto/Files/user_manuals/hr100T%20USER%20MANUAL.PDF

Posted on Jul 27, 2009

  • A Soveral Jul 27, 2009

    Sorry, there is a plus sign missing after the 20 in the first operation.

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