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On a TI-83, letters are variables. You can use these variables to store numbers. The calculator also uses some of the variables for its storage. If you type A and press ENTER, you will probably get 0. This means that A is 0 (unless you changed it and made it something else.)

To change a variable, press the number you want the variable to be, then the arrow (STO>) and then the variable. For example,

25-->W

will make the variable W equal to 4. You can then use variables in your calculations. For example, if you make W equal to 4 and A equal to 5, then

WA + 3

will equal 23. (4 x 5 + 3)

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Q: Why do letters equal numbers on your TI-83?
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Why do letters equal numbers on your TI 83?

The letters are used for programming Or for entering numbers in hexadecimal notation


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