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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 143 · 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. 1.19 + 1 =
  2. 2.7 + 6 + 7 =
  3. 3.2 + 4 =
  4. 4.Meera has 5 books and gets 8 books more. How many books does Meera have now?
  5. 5.Tara has 12 balloons and gets 4 balloons more. How many balloons does Tara have now?
  6. 6.? + 2 = 8
  7. 7.There are 8 green balloons and 7 blue balloons. How many balloons are there in all?
  8. 8.2 + ? = 7
  9. 9.5 + ? = 7
  10. 10.18 + 1 =
  11. 11.There are 4 white balloons and 11 pink balloons. How many balloons are there in all?
  12. 12.Arjun has 3 balls and gets 11 balls more. How many balls does Arjun have now?
  13. 13.Saanvi has 8 balloons and gets 3 balloons more. How many balloons does Saanvi have now?
  14. 14.Lakshmi has 6 books and gets 1 book more. How many books does Lakshmi have now?
  15. 15.2 + ? = 10
  16. 16.10 + 10 =
  17. 17.3 + ? = 4
  18. 18.6 + 1 + 9 =
  19. 19.4 + 5 =
  20. 20.6 + 3 =
  21. 21.9 + ? = 19
  22. 22.? + 1 = 16
  23. 23.5 + 4 =
  24. 24.Manav has 2 shells and gets 14 shells more. How many shells does Manav have now?
  25. 25.There are 3 white flowers and 15 pink flowers. How many flowers are there in all?
  26. 26.? + 1 = 9
  27. 27.17 + ? = 18
  28. 28.? + 7 = 18
  29. 29.There are 11 yellow flowers and 3 green flowers. How many flowers are there in all?
  30. 30.Tara has 2 pencils and gets 13 pencils more. How many pencils does Tara have now?
  31. 31.There are 3 yellow balloons and 5 blue balloons. How many balloons are there in all?
  32. 32.There are 3 green kites and 11 white kites. How many kites are there in all?
  33. 33.7 + 6 + 1 =
  34. 34.15 + 5 =
  35. 35.5 + 3 + 1 =
  36. 36.Kabir has 5 books and gets 7 books more. How many books does Kabir have now?
  37. 37.1 + ? = 11
  38. 38.Arjun has 6 flowers and gets 6 flowers more. How many flowers does Arjun have now?
  39. 39.13 + 4 =
  40. 40.3 + 1 + 15 =

Answer key

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

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