Mixed Addition and Subtraction to 20 Worksheets
Add or subtract — watch the sign on each problem.
Mixed Addition and Subtraction to 20
Name:Date:Score:
Add or subtract. Watch the sign!
- 15 − 2 =
- 27 + 12 =
- 37 − 5 =
- 44 + 16 =
- 53 − 3 =
- 66 − 2 =
- 73 + 6 =
- 81 − 0 =
- 92 + 8 =
- 1013 + 5 =
- 117 + 2 =
- 122 − 0 =
- 131 + 11 =
- 1411 + 6 =
- 157 − 6 =
- 1617 − 14 =
- 172 + 5 =
- 180 + 4 =
- 1911 − 5 =
- 209 + 11 =
- 216 + 11 =
- 2219 − 19 =
- 2316 + 2 =
- 243 + 1 =
Printable Worksheets for Kids · printableworksheetsforkids.pages.dev
Mixed Addition and Subtraction to 20
Name:Date:Score:
Add or subtract. Watch the sign!
- 111 + 4 =
- 21 + 3 =
- 30 + 4 =
- 42 + 10 =
- 53 + 3 =
- 67 − 2 =
- 712 − 0 =
- 81 + 6 =
- 94 − 1 =
- 1020 + 0 =
- 115 + 3 =
- 1218 − 18 =
- 1319 − 0 =
- 1418 − 10 =
- 1511 − 9 =
- 167 − 6 =
- 171 + 4 =
- 185 − 2 =
- 1910 − 8 =
- 2015 − 4 =
- 216 − 2 =
- 2213 − 9 =
- 2318 − 11 =
- 242 + 9 =
Printable Worksheets for Kids · printableworksheetsforkids.pages.dev
Mixed Addition and Subtraction to 20
Name:Date:Score:
Add or subtract. Watch the sign!
- 11 + 13 =
- 212 + 1 =
- 33 + 2 =
- 410 − 10 =
- 51 + 1 =
- 610 − 2 =
- 70 + 6 =
- 88 − 0 =
- 920 − 10 =
- 105 − 5 =
- 118 + 4 =
- 1214 − 12 =
- 137 + 11 =
- 1416 − 13 =
- 157 − 6 =
- 168 + 10 =
- 175 + 2 =
- 184 − 0 =
- 196 + 1 =
- 204 + 3 =
- 2117 − 16 =
- 224 − 4 =
- 2318 − 8 =
- 2414 − 11 =
Printable Worksheets for Kids · printableworksheetsforkids.pages.dev
Answer key — Sheet A (24 answers)
- 1. 3
- 2. 19
- 3. 2
- 4. 20
- 5. 0
- 6. 4
- 7. 9
- 8. 1
- 9. 10
- 10. 18
- 11. 9
- 12. 2
- 13. 12
- 14. 17
- 15. 1
- 16. 3
- 17. 7
- 18. 4
- 19. 6
- 20. 20
- 21. 17
- 22. 0
- 23. 18
- 24. 4
Answer key — Sheet B (24 answers)
- 1. 15
- 2. 4
- 3. 4
- 4. 12
- 5. 6
- 6. 5
- 7. 12
- 8. 7
- 9. 3
- 10. 20
- 11. 8
- 12. 0
- 13. 19
- 14. 8
- 15. 2
- 16. 1
- 17. 5
- 18. 3
- 19. 2
- 20. 11
- 21. 4
- 22. 4
- 23. 7
- 24. 11
Answer key — Sheet C (24 answers)
- 1. 14
- 2. 13
- 3. 5
- 4. 0
- 5. 2
- 6. 8
- 7. 6
- 8. 8
- 9. 10
- 10. 0
- 11. 12
- 12. 2
- 13. 18
- 14. 3
- 15. 1
- 16. 18
- 17. 7
- 18. 4
- 19. 7
- 20. 7
- 21. 1
- 22. 0
- 23. 10
- 24. 3
About this skill
Mixing operations trains children to read the sign before they calculate, a habit that avoids many careless errors.
How to teach it
- Teach strategies — counting on, doubles, making ten — alongside the facts.
- Use counters or coins for new ideas before moving to the page.
- Check the ones column first, then the tens, and always write carried numbers small.
Mistakes to watch for
- Forgetting to add the carried number into the next column.
- Starting a column sum from the left instead of the right.
