Find the Factors is a free printable Grade 4 maths worksheet on listing every factor of a number, aligned to Common Core standard 4.OA.B.4. It prints 10 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.
4.OA.B.4
List all the factors.
LessonPrint · 4.OA.B.4 · Set 1 · free to copy for classroom use
Set 1. Prints on its own sheet.
It practises listing every factor of a number — 10 questions for Grade 4, all on Common Core 4.OA.B.4: Find factors and multiples, and tell prime from composite numbers. The instruction to pupils is “List all the factors”, and the answer key follows on the next sheet.
CCSS.MATH.CONTENT.4.OA.B.4 — 4.OA.B.4, in the Operations & Algebraic Thinking domain for Grade 4. The published standard reads: “Find all factor pairs for a whole number in the range 1-100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number is prime or composite.” The worksheet assesses that standard rather than a paraphrase of it.
Find the Factors is written for Grade 4, typically ages 9-10. It is one of the sheets on 4.OA.B.4, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.
Yes. All 10 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.
25 — one per pupil, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.
Yes. Find the Factors, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.
Yes — “Factors, Multiples and Primes” is a 50-minute Grade 4 plan for 4.OA.B.4, timed section by section, with the misconceptions to expect and an exit ticket. Find the Factors is the practice that follows it.
Find factors and multiples, and tell prime from composite numbers.
Teaching this next? Factors, Multiples and Primes is the 50-minute plan for it, with the misconceptions to expect.
Last reviewed 2026-09-05. Aligned to 4.OA.B.4 of the Common Core State Standards for mathematics.