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Find the Rule from the Numbers is a free printable Grade 5 maths worksheet on inferring a rule from the terms alone, aligned to Common Core standard 5.OA.B.3. It prints 8 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.

Set 17 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Find the Rule from the Numbers

5.OA.B.3

NameDate

Write the rule and the next number.

1.9, 27, 45, 63, 81, ___ What is the rule?
2.4, 17, 30, 43, 56, ___ What is the rule?
3.5, 26, 47, 68, 89, ___ What is the rule?
4.5, 25, 45, 65, 85, ___ What is the rule?
5.8, 27, 46, 65, 84, ___ What is the rule?
6.4, 23, 42, 61, 80, ___ What is the rule?
7.8, 21, 34, 47, 60, ___ What is the rule?
8.6, 27, 48, 69, 90, ___ What is the rule?

LessonPrint · 5.OA.B.3 · Set 17 · free to copy for classroom use

Answer key — Find the Rule from the Numbers

Set 17. Prints on its own sheet.

  1. 1.add 18; next is 99
  2. 2.add 13; next is 69
  3. 3.add 21; next is 110
  4. 4.add 20; next is 105
  5. 5.add 19; next is 103
  6. 6.add 19; next is 99
  7. 7.add 13; next is 73
  8. 8.add 21; next is 111

Last reviewed 2026-09-05. Aligned to 5.OA.B.3 of the Common Core State Standards for mathematics.