You can change, delete, copy, swap, and move the content in cells.
To replace specific content already in the cell, select the cell and then select what you want to replace by double-clicking; hold down the Shift key and select more content if you want to replace more. Type to replace the selected content.
To replace everything in the cell, select the cell and then begin typing.
If "Return key moves to next cell" isn't selected in the Table inspector, you can also select the cell and then press Return or Enter, which selects everything in the cell, and then start typing.
To insert new content within existing content, select the cell, click to set the insertion point, and begin typing.
To undo changes made to a table cell since selecting the cell, press Esc.
To delete the content of table cells, rows, or columns, select the cells, rows, or columns and then press the Delete key or choose Edit > Delete.
To delete the contents, background fill, and any style settings, choose Edit > Clear All. The default style is applied to the selection.
To swap cell values within a table, select a cell or several adjacent cells and drag the selection to the destination cells. Values in the selection are swapped with values in the destination cells.
To copy cells within a table to another table, or to the canvas, drag selected cells while holding down the Option key. Any values in the destination cells are replaced, and the values in the original location are retained.
You can also copy cells by selecting them, choosing Edit > Copy, selecting destination cells, and then choosing Edit > Paste.
To add formulas and functions to cells, see the instructions in help.
For detailed information about how to use the hundreds of iWork functions, choose Help > Formulas and Functions Help, or go to Formulas and Functions Help on the web.
To learn about applying cell formatting, see the topics below Formatting Table Cell Values for Display.
For basic tips on typing into table cells and formatting the content, see Typing Content into Table Cells.