The change of sign key converts the value from positive to negative or vice versa.
For example, if the number shown in the calculator is 100, clicking the button will convert it to -100. Clicking it again will convert it back to 100.
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how to change tax rate
On my calculator it is the same key as the log key, but you have to press the "Shift" key first. It is shown as 10â– .
Same place as the minus sign
= or ent or enter
Well, sweetheart, it's not rocket science. To make a plus sign on a TI-84 calculator, you simply press the "+" key. And to make a minus sign, you press the "-" key. It's as easy as pie, so go ahead and crunch those numbers with confidence.