Selecting Cells in Different Tables

Question

I've created three tables on a Numbers 09 spreadsheet - let's call them tables "A", "B" and "C".
I want to select a cell on Table A and another cell on Table B then Sum them in another cell on Table C.
The problem is, I cannot figure out how to select the cells on tables A and B simultaneously so that I can drag the Sum function for them to a cell on table C.

Answer 1

Marty,
In the English mode, the range identifier is the colon, not the comma. So, to SUM cells A1, B1 and C1, one would write: =SUM(A1:C1).
This may be what is tripping you up. The comma delimits multiple ranges, so if you wanted the sum of A1, B1, C1 including as well X1, Y1 and Z1, one would write: =SUM(A1:C1, X1:Z1). Of course, the comma can also be used to delimit single-cell ranges, as in: =SUM(A1, X2, Z3)
Further, and more to the point of your original question; to select multiple arguments for the SUM function, one at a time from different tables, type =SUM() in the cell where the result goes, and place the cursor between the parentheses, then hold down the Command key while you click in any Table, any cell, for as many tables and cells as you like, and the references will all appear in your expression properly formatted.
Hope this helps.
Jerry
Additional comment about Command Key