=SUM(A:C!A1)

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Vasant


"man-man" wrote in message
...
I create 21 worksheet in a file name A,B,C,D.........'Total'
I want to sum all A1 cells of A,B,C.........in to cell A1of 'total'
sheet

Cell A1 of 'total' is (=A!A1+B!A1+C!A1...........)

Is there any smarter way to sum all of it??
Thanks!