Print one worksheet, photocopy thirty, and every child in the room has the identical page. That is fine on Monday and useless on Thursday: the ones who need another go have already seen the answers.
Every sheet here is generated when you ask for it. Ask twice and you get two different sets of questions in the same format at the same level. That is the difference between one worksheet and an unlimited supply of one worksheet.
Difficulty here works underneath the grade rather than beside it. A Grade 2 multiplication sheet stays inside the 0–5 facts even on the hardest setting, because that is what Grade 2 is taught. To go further you change the grade, deliberately, rather than discovering that a challenge sheet has quietly handed a seven-year-old the twelve times table.
For a child working above or below the class, set their grade rather than their difficulty. The difficulty dial is for stretching inside a year; the grade dial is for moving between them.
Can I print these for my whole class?
Yes. Print as many copies as you need for your classroom. The only thing not allowed is reselling the PDFs or redistributing them as your own product.
Are the worksheets aligned to Common Core?
They follow the skill order most K–5 programmes use, and every worksheet page states its grade range and exactly what its three difficulty settings change. They are not certified against any particular state or national standard, so check the fit against your own scheme of work.
Do they print on A4?
Letter and A4, chosen before you download. The layout is drawn for the paper size rather than scaled to fit it.
Can I get a worksheet back later, exactly as printed?
Yes. Every generated worksheet carries a seed in its URL, so saving the link means you can reprint the identical sheet next term.