CCSS 4.OA.B.4 Worksheets
Grade 4 · Operations & Algebraic Thinking
Find factor pairs within 100 and decide whether a number is prime or composite.
Below are free printable worksheets that support 4.OA.B.4. Print them as PDFs, or generate a fresh one. Every math answer key is computed in code, so it is never wrong.
Teach this standard
Deliver a whole lesson on 4.OA.B.4 from a textbook-grade teaching unit, with a hook, worked examples, diagrams, misconceptions, and an exit ticket.
Teaching guide
Find factor pairs within 100 and decide whether a number is prime or composite.
Find factors by pairing (arrays or divisibility), list them in order, and connect to multiples as the same relationship from the other side.
Generated and checked in code, so it is correct.
Missing a factor pair (especially 1 and the number itself) and confusing factors with multiples.