Grade 1 · Math · On Level
Free Addition Within 20 worksheet - version 2
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-7Q8V6B-L19P
1.
9 + 11 =
2.
18 + 2 =
3.
20 + 0 =
4.
19 + 1 =
5.
14 + 6 =
6.
17 + 3 =
7.
12 + 8 =
8.
9 + 6 =
9.
9 + 9 =
10.
10 + 10 =
11.
0 + 10 =
12.
1 + 3 =
13.
3 + 17 =
14.
11 + 4 =
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 2
- 9 + 11 =20
- 18 + 2 =20
- 20 + 0 =20
- 19 + 1 =20
- 14 + 6 =20
- 17 + 3 =20
- 12 + 8 =20
- 9 + 6 =15
- 9 + 9 =18
- 10 + 10 =20
- 0 + 10 =10
- 1 + 3 =4
- 3 + 17 =20
- 11 + 4 =15
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.