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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 530 · 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.There are 10 red flowers and 9 white flowers. How many flowers are there in all?
  2. 2.7 + 5 + 3 =
  3. 3.10 + 8 =
  4. 4.2 + 7 + 3 =
  5. 5.1 + 5 + 1 =
  6. 6.Rahul has 2 balls and gets 9 balls more. How many balls does Rahul have now?
  7. 7.6 + 1 + 2 =
  8. 8.9 + 9 =
  9. 9.? + 5 = 9
  10. 10.7 + 8 + 4 =
  11. 11.Pooja has 10 laddoos and gets 1 laddoo more. How many laddoos does Pooja have now?
  12. 12.? + 3 = 10
  13. 13.8 + 8 =
  14. 14.3 + 4 + 3 =
  15. 15.There are 10 yellow flowers and 10 red flowers. How many flowers are there in all?
  16. 16.1 + ? = 12
  17. 17.There are 11 red beads and 2 pink beads. How many beads are there in all?
  18. 18.3 + 4 + 7 =
  19. 19.Manav has 2 books and gets 17 books more. How many books does Manav have now?
  20. 20.1 + 1 + 4 =
  21. 21.Saanvi has 9 flowers and gets 8 flowers more. How many flowers does Saanvi have now?
  22. 22.16 + 3 =
  23. 23.Kabir has 2 flowers and gets 18 flowers more. How many flowers does Kabir have now?
  24. 24.4 + 5 + 9 =
  25. 25.? + 9 = 11
  26. 26.1 + 1 =
  27. 27.Meera has 13 flowers and gets 1 flower more. How many flowers does Meera have now?
  28. 28.4 + 2 =
  29. 29.7 + ? = 9
  30. 30.15 + ? = 16
  31. 31.Manav has 7 balls and gets 1 ball more. How many balls does Manav have now?
  32. 32.Pooja has 15 bananas and gets 4 bananas more. How many bananas does Pooja have now?
  33. 33.11 + 6 =
  34. 34.Meera has 4 shells and gets 9 shells more. How many shells does Meera have now?
  35. 35.Rahul has 15 shells and gets 4 shells more. How many shells does Rahul have now?
  36. 36.? + 7 = 8
  37. 37.Nisha has 2 laddoos and gets 10 laddoos more. How many laddoos does Nisha have now?
  38. 38.Aditya has 3 laddoos and gets 5 laddoos more. How many laddoos does Aditya have now?
  39. 39.3 + ? = 14
  40. 40.19 + 1 =

Answer key

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

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