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Grade 1 · Math · On Level

Free Addition Within 20 worksheet - version 14

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-1GZSWEU-L19P

Free printable
1.13 + 4 =
2.15 + 1 =
3.6 + 14 =
4.3 + 2 =
5.2 + 13 =
6.19 + 1 =
7.15 + 5 =
8.3 + 11 =
9.3 + 10 =
10.7 + 9 =
11.3 + 17 =
12.1 + 17 =
13.6 + 1 =
14.2 + 10 =
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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 14
  1. 13 + 4 =17
  2. 15 + 1 =16
  3. 6 + 14 =20
  4. 3 + 2 =5
  5. 2 + 13 =15
  6. 19 + 1 =20
  7. 15 + 5 =20
  8. 3 + 11 =14
  9. 3 + 10 =13
  10. 7 + 9 =16
  11. 3 + 17 =20
  12. 1 + 17 =18
  13. 6 + 1 =7
  14. 2 + 10 =12

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.