Area of composite figures worksheets

A composite figure has no formula of its own, and that is the point. These free printable worksheets show an L-shape with all six sides labeled and leave the method to the child.

Area of composite figures
Area of composite figures worksheet — Sides to 30 cm, free printable with answer key

The answer key prints on a separate page.

What's on this sheet

There are two good roads. Split the L into two rectangles and add them, or take the whole rectangle and subtract the bite out of the corner. Both are correct, both are worth knowing, and a child who can do one and check with the other has understood something a single formula could never teach.

Why this sheet works

All six sides carry numbers, so neither method needs a measurement that is not on the page. The answer key shows the whole-less-the-bite working, which is the version a parent can check at a glance.