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Factor Pairs is a free printable Grade 4 maths worksheet on factors that multiply to a given product, aligned to Common Core standard 4.OA.B.4. It prints 16 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.

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All 25 sets ask different questions.

Factor Pairs

4.OA.B.4

NameDate

Work out each answer.

1.___ × 11 = 55
2.8 × ___ = 72
3.12 × ___ = 96
4.___ × 2 = 8
5.8 × ___ = 16
6.___ × 8 = 64
7.7 × ___ = 63
8.4 × ___ = 44
9.___ × 12 = 84
10.___ × 2 = 18
11.5 × ___ = 20
12.___ × 8 = 48
13.10 × ___ = 70
14.11 × ___ = 99
15.5 × ___ = 15
16.___ × 3 = 21

LessonPrint · 4.OA.B.4 · Set 1 · free to copy for classroom use

Answer key — Factor Pairs

Set 1. Prints on its own sheet.

  1. 1.5
  2. 2.9
  3. 3.8
  4. 4.4
  5. 5.2
  6. 6.8
  7. 7.9
  8. 8.11
  9. 9.7
  10. 10.9
  11. 11.4
  12. 12.6
  13. 13.7
  14. 14.9
  15. 15.3
  16. 16.7

Questions about Factor Pairs

What does the Factor Pairs worksheet cover?

It practises factors that multiply to a given product — 16 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 “Work out each answer”, and the answer key follows on the next sheet.

Which Common Core standard does Factor Pairs practise?

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.

What age or grade is this worksheet for?

Factor Pairs 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.

Does Factor Pairs come with an answer key?

Yes. All 16 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.

How many different versions of Factor Pairs can I print?

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.

Is Factor Pairs free to print and photocopy?

Yes. Factor Pairs, 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.

More practice for 4.OA.B.4

Find factors and multiples, and tell prime from composite numbers.

All Grade 4 worksheets

Last reviewed 2026-09-05. Aligned to 4.OA.B.4 of the Common Core State Standards for mathematics.