Change the sign on all numbers in a spread sheet

[Guest]

I have a spread sheet that I need to change all of the negative numbers to
positve and positive to negative. Is there an easy way to do this, other
than redoing each cell or adding a column to multiply by -1?

 

[Guest]

Put -1 in a "spare" cell and copy (this cell).
Select data to changed
Edit==>Paste Special==> Operation==>Multiply
Delete -1 from your "spare" cell

(Backup before attempting above!)

HTH

 

[Don Guillett]

Sub changepos()
For Each c In Range("c1:c2")
c.Value = -c
Next c
End Sub