Terms of use

Last updated: September 2026

Use of the site

NumThink is provided free of charge for personal and classroom educational use. Teachers, parents, and tutors are welcome to print and distribute worksheets generated on the site for non-commercial educational purposes.

Accuracy

Every method and generated question is verified programmatically, and content is editorially reviewed. Still, the site is provided "as is" without warranty; always double-check results used for anything that matters (exams, homework grading, engineering...).

Commercial use

Selling worksheets generated by NumThink, or republishing its lesson content wholesale, is not permitted without permission. Linking to the site is always welcome.