Kile helps you with inserting your floating elements. With the → wizard it is very simple to create a new figure or table environment.
To insert a new floating environment just follow these steps:
Choose whether you want to insert a figure or a table.
Select the desired positioning rules.
Enter a caption for your floating element.
Type in a label for your new floating element. Kile will automatically suggest an appropriate prefix , e.g. "fig:" for figures and "tab:" for tables.