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Grade 1 · Math · On Level

Free Addition Within 20 worksheet - version 8

Practice addition facts and strategies with sums through 20. This printable version includes 14 grade-appropriate questions and a separate answer sheet.

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Addition Within 20

Grade 1 · On-level practice · 14 questions · Version PG-AI4W41-L19P

Free printable
1.11 + 8 =
2.20 + 0 =
3.13 + 7 =
4.0 + 6 =
5.11 + 9 =
6.7 + 2 =
7.17 + 3 =
8.5 + 15 =
9.7 + 13 =
10.19 + 1 =
11.10 + 10 =
12.6 + 6 =
13.18 + 2 =
14.1 + 19 =
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Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 8
  1. 11 + 8 =19
  2. 20 + 0 =20
  3. 13 + 7 =20
  4. 0 + 6 =6
  5. 11 + 9 =20
  6. 7 + 2 =9
  7. 17 + 3 =20
  8. 5 + 15 =20
  9. 7 + 13 =20
  10. 19 + 1 =20
  11. 10 + 10 =20
  12. 6 + 6 =12
  13. 18 + 2 =20
  14. 1 + 19 =20

Worked example

8 + 7 = 15. Make ten: 8 + 2 + 5 = 15.

Common mistake

Losing part of the second addend when making ten.

Helpful hint

Look for a way to make 10 first.