What you may do
Every sheet on this site is free to print and use in a classroom, in a tutoring session or at home. You may photocopy a class set, put a sheet in a homework pack, send a PDF to the parents in your class, and keep copies in your own planning folder.
You may also change the settings and print as many different versions as you need. Printing the same sheet for six year groups, or generating a fresh one each week, is exactly what the generator is for.
What you may not do
You may not sell the sheets or the PDFs, bundle them into a paid product, or charge for access to them. You may not republish a whole set on another website, in a printed book, or in a commercial resource pack, whether or not the pages are edited.
Quoting a single question or a screenshot for review, training or a blog post is fine, provided it is credited and links back to the page it came from. If you are unsure whether a use counts as republishing, ask first: the contact address is on the contact page.
Accuracy and changes
The sheets are checked by script against the question engine and against a set of known answers, but no resource is perfect. If you find a wrong answer, report it and it will be corrected and republished; there is no warranty that a sheet is free of error.
The site may add, change or retire pages and PDFs at any time. Ready-made PDFs are versioned by year and difficulty so that a link you have saved keeps working for as long as the file is published.