There are 18 tabs I want to exclude from my 42 tab sum formula. How do I do
this? Thanks in advance.

I like this technique...

Create two new worksheets--one to the far right and one to the far left.

Call them Start and End

Then using a sheet (Summary) that is outside this "sandwich" of worksheets:

=Sum(start:end!A1)

Then you can drag sheets in and out of that sandwich to play what if games.

I'd put a couple of notes on each of these sheets:

"don't delete this sheet!"

And protect the worksheet so that people don't use it for real data.

So if you put 18 tabs outside that sandwich of Start:End, those values won't be
included in the summary sheet.

(And just drag them in when you need to.)

DGM wrote:

There are 18 tabs I want to exclude from my 42 tab sum formula. How do I do
this? Thanks in advance.

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Dave Peterson