Method One: Skillfully using the project number calculation
Step One: Select the entire column of the table (click the top border of a column to select an entire column), then click the menu Bar-Start-item number.
Step Two: Here we randomly choose a numbering style, because our goal is only to know how many rows, drag the scroll bar, to the last row of the table, by numbering we know how many lines.
Method Two: View by Table Properties
Step One: Right-click the table and select the table properties from the pop-up menu.
Step two: In the Table property interface, switch to the Row tab, you can see how many rows.
The third step: The column method is the same, as the figure.