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Grade 1 · Math · On Level

Free Addition Within 20 worksheet - version 5

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-946VN6-L19P

Free printable
1.0 + 19 =
2.2 + 11 =
3.8 + 12 =
4.10 + 10 =
5.14 + 6 =
6.3 + 14 =
7.3 + 8 =
8.9 + 1 =
9.10 + 8 =
10.20 + 0 =
11.6 + 6 =
12.15 + 5 =
13.2 + 7 =
14.7 + 13 =
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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 5
  1. 0 + 19 =19
  2. 2 + 11 =13
  3. 8 + 12 =20
  4. 10 + 10 =20
  5. 14 + 6 =20
  6. 3 + 14 =17
  7. 3 + 8 =11
  8. 9 + 1 =10
  9. 10 + 8 =18
  10. 20 + 0 =20
  11. 6 + 6 =12
  12. 15 + 5 =20
  13. 2 + 7 =9
  14. 7 + 13 =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.