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Addition Within 10 is a free printable Grade 1 maths worksheet on addition facts that stay below ten, aligned to Common Core standard 1.OA.C.6. 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.

Set 1 of 25 · the same problems every time you open this link.

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One paper per pupil

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All 25 sets ask different questions.

Addition Within 10

1.OA.C.6

NameDate

Work out each answer.

1.6 + 2 =
2.3 + 2 =
3.5 + 2 =
4.5 + 1 =
5.1 + 2 =
6.4 + 4 =
7.4 + 5 =
8.4 + 1 =
9.4 + 2 =
10.7 + 1 =
11.3 + 6 =
12.3 + 5 =
13.3 + 3 =
14.2 + 4 =
15.2 + 1 =
16.2 + 5 =

LessonPrint · 1.OA.C.6 · Set 1 · free to copy for classroom use

Answer key — Addition Within 10

Set 1. Prints on its own sheet.

  1. 1.8
  2. 2.5
  3. 3.7
  4. 4.6
  5. 5.3
  6. 6.8
  7. 7.9
  8. 8.5
  9. 9.6
  10. 10.8
  11. 11.9
  12. 12.8
  13. 13.6
  14. 14.6
  15. 15.3
  16. 16.7

Questions about Addition Within 10

What does the Addition Within 10 worksheet cover?

It practises addition facts that stay below ten — 16 questions for Grade 1, all on Common Core 1.OA.C.6: Add and subtract within 20, quickly and accurately within 10. The instruction to pupils is “Work out each answer”, and the answer key follows on the next sheet.

Which Common Core standard does Addition Within 10 practise?

CCSS.MATH.CONTENT.1.OA.C.6 — 1.OA.C.6, in the Operations & Algebraic Thinking domain for Grade 1. The published standard reads: “Add and subtract within 20, demonstrating fluency for addition and subtraction within 10.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Addition Within 10 is written for Grade 1, typically ages 6-7. It is one of the sheets on 1.OA.C.6, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.

Does Addition Within 10 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 Addition Within 10 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 Addition Within 10 free to print and photocopy?

Yes. Addition Within 10, 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.

Is there a lesson plan to teach 1.OA.C.6?

Yes — “Addition and Subtraction Within 20” is a 45-minute Grade 1 plan for 1.OA.C.6, timed section by section, with the misconceptions to expect and an exit ticket. Addition Within 10 is the practice that follows it.

More practice for 1.OA.C.6

Add and subtract within 20, quickly and accurately within 10.

Teaching this next? Addition and Subtraction Within 20 is the 45-minute plan for it, with the misconceptions to expect.

All Grade 1 worksheets

Last reviewed 2026-09-05. Aligned to 1.OA.C.6 of the Common Core State Standards for mathematics.