Free printable worksheets with answer keys. Pick a level, preview the questions, then open the sheet to swap or delete any single question.
Easy: 10 more or less, up to 100
Adding 10 changes the tens digit by one; adding 100 changes the hundreds digit by one. The other digits stay the same unless a place rolls over.
Add or subtract in your head.
Tip: tick “Step-by-step answer key” in the generator to print each step for marking.
Yes. Numbers are generated each time, and the answer key is calculated for that sheet. Swap any single question and its answer updates too.
Yes. In the generator, add more skills; each gets its own section on the sheet with its own instructions.
Yes. Generating and printing from the browser is free with no sign-up. PDF downloads need a free account.