right click on sheet tabview codeinsert thissave workbook
'========
Option Explicit
Dim oldvalue As Double
'Below works
Private Sub Worksheet_Change(ByVal Target As Excel.Range)
If Target.Address = "$A$5" Or Target.Address = "$B$5" Then
Application.EnableEvents = False
If Target.Value = 0 Then oldvalue = 0
' don't want the following line to create a loop
Target.Value = 1 * Target.Value + oldvalue
oldvalue = Target.Value
Application.EnableEvents = True
End If
End Sub

Sub Fixit()'Use this if above stops working
Application.EnableEvents = True
End Sub
'==========


"Todd" wrote in message
...
I am entering numbers like "5.725" into a cell next to a
given part number.

then later on I might come back to the same cell and need
to enter and additional amount like 4.5

so I need to hit the = sign and get the cell to
say "=5,725+4.5 becuase I need to see the detail behind
the total of the cell.

can a macro be made that will take me to edit mode simular
to f2 but will automatically put the = in front of the
original number then jump to the right of it place a + and
be ready for me to type the 2nd value

so :

go to a cell with a number already in it

hit the macro

get my cursor blinking for data entry with the original
number still intact and an = to the left of it and a + to
the right of the original number

=5.725+"I type the new number here and hit the green check

thanks