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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 337 · 40 sums
TalentJR

The method (Count on): Start with the bigger number. Count on the smaller number, one finger at a time. For a missing number (8 + ? = 15), count on from 8 up to 15, or take away: 15 − 8.

NameDateTime takenScore ___ / 40
  1. 1.11 + 3 =
  2. 2.6 + 3 + 3 =
  3. 3.Ishaan has 14 shells and gets 2 shells more. How many shells does Ishaan have now?
  4. 4.? + 1 = 6
  5. 5.Lakshmi has 9 shells and gets 7 shells more. How many shells does Lakshmi have now?
  6. 6.Sneha has 3 laddoos and gets 4 laddoos more. How many laddoos does Sneha have now?
  7. 7.? + 1 = 7
  8. 8.1 + 5 =
  9. 9.8 + 5 =
  10. 10.5 + ? = 8
  11. 11.10 + ? = 11
  12. 12.? + 4 = 14
  13. 13.Tara has 3 crayons and gets 10 crayons more. How many crayons does Tara have now?
  14. 14.Priya has 13 balls and gets 1 ball more. How many balls does Priya have now?
  15. 15.5 + 2 + 10 =
  16. 16.There are 9 red kites and 4 green kites. How many kites are there in all?
  17. 17.13 + ? = 19
  18. 18.17 + 3 =
  19. 19.6 + 3 + 11 =
  20. 20.7 + 8 + 2 =
  21. 21.12 + 3 =
  22. 22.There are 2 red balls and 4 green balls. How many balls are there in all?
  23. 23.? + 1 = 17
  24. 24.16 + 1 =
  25. 25.13 + 2 =
  26. 26.? + 2 = 3
  27. 27.There are 11 pink flowers and 9 white flowers. How many flowers are there in all?
  28. 28.4 + 10 =
  29. 29.7 + ? = 9
  30. 30.14 + 3 =
  31. 31.There are 3 yellow balls and 10 blue balls. How many balls are there in all?
  32. 32.14 + 6 =
  33. 33.There are 10 pink crayons and 2 white crayons. How many crayons are there in all?
  34. 34.6 + ? = 16
  35. 35.4 + 1 + 2 =
  36. 36.1 + 18 =
  37. 37.Ishaan has 8 books and gets 12 books more. How many books does Ishaan have now?
  38. 38.10 + 1 =
  39. 39.There are 4 pink balls and 5 green balls. How many balls are there in all?
  40. 40.14 + ? = 20

Answer key

  1. 14
  2. 12
  3. 16
  4. 5
  5. 16
  6. 7
  7. 6
  8. 6
  9. 13
  10. 3
  11. 1
  12. 10
  13. 13
  14. 14
  15. 17
  16. 13
  17. 6
  18. 20
  19. 20
  20. 17
  21. 15
  22. 6
  23. 16
  24. 17
  25. 15
  26. 1
  27. 20
  28. 14
  29. 2
  30. 17
  31. 13
  32. 20
  33. 12
  34. 10
  35. 7
  36. 19
  37. 20
  38. 11
  39. 9
  40. 6

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