To edit and rearrange tables, cells, rows, and columns, you must first select them.
Note: The tasks below apply to a table you add to your page. They don’t apply to a page you formatted into columns.
Sometimes you must select rather than just tap a table to complete a specific task. Selecting ensures that the table is in the correct state for the steps that follow.
First tap outside the table to make sure it’s unselected, then tap the table to select it.
Tap the table.
Letters appear above the columns and numbers appear to the left of the rows.
Do any of the following:
Select a single row or column: Tap the number or letter for the row or column.
Select multiple rows or columns: Tap the number or letter for a row or column, then drag a blue dot to encompass the rows or columns you want.
Select a cell: Tap the table, then tap the cell once.
Select a range of cells: Tap the table, tap a cell once, then drag a blue dot to encompass the range of cells you want.
If you don’t see the blue dots, tap 
to close the keyboard, then try again to select the range.
Select a cell to add or edit content: Double-tap the cell.