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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 674 · 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. 1.16 + 2 =
  2. 2.3 + 2 + 2 =
  3. 3.2 + 3 + 11 =
  4. 4.18 + 2 =
  5. 5.There are 9 yellow kites and 6 blue kites. How many kites are there in all?
  6. 6.There are 5 blue balls and 8 red balls. How many balls are there in all?
  7. 7.Manav has 13 flowers and gets 6 flowers more. How many flowers does Manav have now?
  8. 8.11 + 4 =
  9. 9.Meera has 3 shells and gets 13 shells more. How many shells does Meera have now?
  10. 10.19 + 1 =
  11. 11.9 + 10 =
  12. 12.8 + 2 + 4 =
  13. 13.9 + 2 =
  14. 14.Saanvi has 4 books and gets 12 books more. How many books does Saanvi have now?
  15. 15.2 + ? = 4
  16. 16.18 + 1 =
  17. 17.6 + 10 =
  18. 18.4 + 4 + 6 =
  19. 19.? + 10 = 14
  20. 20.2 + ? = 3
  21. 21.9 + 9 =
  22. 22.13 + 6 =
  23. 23.16 + 4 =
  24. 24.4 + 8 + 4 =
  25. 25.7 + 3 + 2 =
  26. 26.There are 4 white beads and 2 red beads. How many beads are there in all?
  27. 27.2 + ? = 19
  28. 28.3 + 3 + 4 =
  29. 29.10 + ? = 16
  30. 30.3 + 12 =
  31. 31.5 + 3 + 6 =
  32. 32.Arjun has 12 flowers and gets 3 flowers more. How many flowers does Arjun have now?
  33. 33.Dev has 7 laddoos and gets 12 laddoos more. How many laddoos does Dev have now?
  34. 34.There are 2 yellow flowers and 17 red flowers. How many flowers are there in all?
  35. 35.3 + ? = 16
  36. 36.There are 5 yellow balls and 14 green balls. How many balls are there in all?
  37. 37.3 + ? = 11
  38. 38.6 + 1 + 3 =
  39. 39.3 + 3 =
  40. 40.16 + 3 =

Answer key

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

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