Prime or Composite Worksheet Generator
Free prime numbers worksheet generator: decide whether each number is prime or composite. Unlimited printable PDFs with keys.
Grade 4Math4.OA.B.4Answer key included
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10 questions
Every shuffle deals a brand-new worksheet — free and unlimited, answer key included.
A different sheet every time
Press Shuffle for a fresh set of problems, lock the ones you want to keep, or type your own numbers straight into the list. The answer key is generated from the same sheet you are looking at, so it can never disagree with the questions.
Print straight from the browser or download the PDF — Letter or A4, with or without the key. Nothing to sign up for and no limit on how many you make.