Free printable area worksheets — find the area of composite (irregular) figures by decomposing them into rectangles, plus rectangle area and missing-side problems. Every worksheet is a one-click PDF with an answer key.
These free printable area worksheets focus on composite figures — L-shapes and other rectilinear figures a student must break into non-overlapping rectangles, find each area, and add (or subtract a notch) to get the total. Each figure is labelled on the diagram, so students reason from the shape rather than a formula. The sets also mix in rectangle area and missing-side (area ÷ side) problems for a full workout.
Print for class, a math center, or homework, or download the PDF to keep a clean copy. Every worksheet includes an answer key. See also our volume worksheets and the full math worksheets library.