❄️ Winter Addition Within 20

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1. 8 + 12 = ____

2. 8 + 7 = ____

3. 6 + 7 = ____

4. 9 + 10 = ____

5. 10 + 7 = ____

6. 12 + 3 = ____

7. 3 + 16 = ____

8. 8 + 4 = ____

9. 4 + 14 = ____

10. 2 + 9 = ____

11. 10 + 3 = ____

12. 7 + 11 = ____

13. 9 + 3 = ____

14. 3 + 14 = ____

15. 2 + 4 = ____

16. 8 + 1 = ____

17. 10 + 6 = ____

18. 10 + 3 = ____

19. 6 + 2 = ____

20. 12 + 1 = ____

Answer key: 1. 20 · 2. 15 · 3. 13 · 4. 19 · 5. 17 · 6. 15 · 7. 19 · 8. 12 · 9. 18 · 10. 11 · 11. 13 · 12. 18 · 13. 12 · 14. 17 · 15. 6 · 16. 9 · 17. 16 · 18. 13 · 19. 8 · 20. 13

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Worksheets › Winter worksheets › Grade 1 › Math

Grade 1 (ages 6–7)Numbers & mathsFree printable PDF

About this grade 1 worksheet

Free winter math worksheet for 1st grade: solve 20 addition facts within 20. Printable, original, with an answer key where needed. Skill: Adding within 20. Level: Grade 1 — also suits Year 2 (UK).

For teachers: skills & standards

CCSS 1.OA.C.6: Add and subtract within 20, with fluency within 10
Works as a morning-work page, a centre/station activity, homework or an early-finisher task.

Frequently asked questions

Is this worksheet free?

Yes — it is free to print for home or the classroom. Sign in with a free Pagine account, then use the Print button or save it as a PDF.

What age is it for?

It is designed for Grade 1 (ages 6–7), but use it with any child who is ready.

What skills does it build?

Adding within 20.

Where can I find grade 1 books to read with it?

Pagine's free library has 20,000+ children's books you can read in the Pagine e-reader or the free Pagine app — sorted by age and grade, with free audiobooks too.

More winter math worksheets

Winter Subtraction Within 20 · Winter Word Problems · Winter Tens and Ones · Winter Compare Two-Digit Numbers · Winter Missing Numbers · Winter Tell Time: Hour & Half Hour · Winter Picture Graph Questions · Winter Skip Counting by 2s, 5s and 10s · Winter Doubles and Near Doubles

All 50 winter worksheets for Grade 1 → · Winter books & activities →

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