Grade 1 · Math · On Level
Free Addition Within 20 worksheet - version 7
Practice addition facts and strategies with sums through 20. This printable version includes 14 grade-appropriate questions and a separate answer sheet.
Addition Within 20
Grade 1 · On-level practice · 14 questions · Version PG-8K7O98-L19P
1.4 + 5 =
2.0 + 4 =
3.11 + 8 =
4.6 + 11 =
5.11 + 9 =
6.16 + 4 =
7.5 + 15 =
8.19 + 1 =
9.11 + 5 =
10.2 + 18 =
11.7 + 10 =
12.0 + 15 =
13.9 + 4 =
14.4 + 14 =
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 7
- 4 + 5 =9
- 0 + 4 =4
- 11 + 8 =19
- 6 + 11 =17
- 11 + 9 =20
- 16 + 4 =20
- 5 + 15 =20
- 19 + 1 =20
- 11 + 5 =16
- 2 + 18 =20
- 7 + 10 =17
- 0 + 15 =15
- 9 + 4 =13
- 4 + 14 =18
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.