You can make a table larger or smaller by dragging one of its selection handles or by using the Metrics inspector. You can also change the size of a table by resizing its columns and rows.
Drag one of the square selection handles that appear when a table is selected.
To maintain the table's proportions, hold down the Shift key as you drag.
To resize from the table's center, hold down the Option key as you drag.
To resize a table in one direction, drag a side handle instead of a corner handle.
To resize by specifying exact dimensions, select a table or table cell, click Inspector in the toolbar, and then click the Metrics inspector button. Specify a new width and height in the Size fields. To maintain the table’s proportions, select “Constrain proportions” before you change the width and height values.