Sigma Prep Worksheets — Free Math Worksheets

Find free printable math worksheets with answer keys, Pre-Algebra through Calculus and Statistics. Type a topic, open the sheet.

Find the right free math worksheet in a few keystrokes. Click the Sigma Prep icon in your toolbar, type a topic such as "factoring trinomials" or "law of sines", and pick a match. The worksheet opens on sigmaprep.io in a new tab, where you choose the question types, the number of questions and the difficulty, then print it or save it as a PDF. What you get on sigmaprep.io • 541 worksheet topics across Pre-Algebra, Algebra 1, Geometry, Algebra 2, Precalculus, Calculus and Statistics • An answer key with every sheet • Up to three difficulty levels (easy, medium, hard); most topics have all three • A new set of questions each time you generate a sheet, so each class period can get its own version • Free, with no account and no sign-up What the extension does • Searches the full topic list as you type. Plurals, small typos and other names for a topic all work ("equations", "pythagoren", "PEMDAS", "SOHCAHTOA", "unit circle") • Shows each match's course and the levels it offers • Lets you use the arrow keys and Enter to open a result without the mouse • Links to each course page, plus the full worksheet library • Follows your system's light or dark mode Privacy The extension asks for no permissions. It collects no data and has no analytics. The topic list is built into the extension, so searching never leaves your computer. The only thing it does is open a sigmaprep.io page when you click a result. Questions or a missing topic? Email support@sigmaprep.io.