B1: = SUM($A$1:$A1)

and copy down

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__________________________________
HTH

Bob

"Bob" wrote in message
...
I'm pretty inexperienced with Excel, I just want to know if there's an
easy
way to use the sum function to add the cell above it into the equation, so
for example
A B
+5 10
-4 6

Basically I just want a running total in columb B but there are going to
be
a lot of entries, so I was wondering if there was a way to format column B
to
keep a running total of A.
Thanks!
Bob