In their simplest form, in cell C1 enter =A1+B1 and C1 will display the
answer. The formalae can be anything from very simple to very complex and
can do calculations across multiple worksheets and multiple workbooks. Have
a look at the Excel help file for an idea of how much can be done.
Basically, just about any calculation can be performed on just about any
data.

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Ian
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"Lorri" wrote in message
...
I am doing a paper on Excel and have never used it before. I would like to
know how formulas are created. I would like to know why they are the power
behind worksheets.