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Count On Within 20 is a free printable Grade 1 maths worksheet on counting on with a larger start, aligned to Common Core standard 1.OA.C.5. It prints 9 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 8 of 25 · the same problems every time you open this link.

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One paper per pupil

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

Count On Within 20

1.OA.C.5

NameDate

Work out each answer.

1.10 + 12 =
2.11 + 10 =
3.12 + 12 =
4.12 + 10 =
5.8 + 10 =
6.10 + 11 =
7.10 + 9 =
8.12 + 11 =
9.10 + 8 =

LessonPrint · 1.OA.C.5 · Set 8 · free to copy for classroom use

Answer key — Count On Within 20

Set 8. Prints on its own sheet.

  1. 1.22
  2. 2.21
  3. 3.24
  4. 4.22
  5. 5.18
  6. 6.21
  7. 7.19
  8. 8.23
  9. 9.18

More practice for 1.OA.C.5

Count on to add, and count back to subtract.

Teaching this next? Counting On and Counting Back is the 40-minute plan for it, with the misconceptions to expect.

All Grade 1 worksheets

Last reviewed 2026-09-05. Aligned to 1.OA.C.5 of the Common Core State Standards for mathematics.