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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 636 · 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.Aarav has 15 marbles and gets 1 marble more. How many marbles does Aarav have now?
  2. 2.1 + ? = 8
  3. 3.5 + ? = 7
  4. 4.13 + 6 =
  5. 5.Tara has 15 laddoos and gets 1 laddoo more. How many laddoos does Tara have now?
  6. 6.Saanvi has 5 mangoes and gets 9 mangoes more. How many mangoes does Saanvi have now?
  7. 7.5 + 8 + 6 =
  8. 8.8 + ? = 14
  9. 9.There are 2 red balloons and 17 pink balloons. How many balloons are there in all?
  10. 10.Rahul has 4 mangoes and gets 2 mangoes more. How many mangoes does Rahul have now?
  11. 11.5 + 5 =
  12. 12.Gurpreet has 3 mangoes and gets 7 mangoes more. How many mangoes does Gurpreet have now?
  13. 13.? + 8 = 14
  14. 14.Rohan has 6 balls and gets 3 balls more. How many balls does Rohan have now?
  15. 15.10 + 2 =
  16. 16.1 + 4 + 1 =
  17. 17.There are 7 pink flowers and 7 yellow flowers. How many flowers are there in all?
  18. 18.There are 8 yellow balls and 6 white balls. How many balls are there in all?
  19. 19.9 + 8 =
  20. 20.Saanvi has 15 marbles and gets 5 marbles more. How many marbles does Saanvi have now?
  21. 21.5 + 2 =
  22. 22.? + 1 = 3
  23. 23.4 + 4 + 6 =
  24. 24.There are 9 green kites and 2 red kites. How many kites are there in all?
  25. 25.There are 3 white balloons and 4 blue balloons. How many balloons are there in all?
  26. 26.1 + ? = 13
  27. 27.3 + 7 + 7 =
  28. 28.13 + 5 =
  29. 29.Kabir has 2 laddoos and gets 4 laddoos more. How many laddoos does Kabir have now?
  30. 30.2 + 7 + 7 =
  31. 31.2 + 2 + 9 =
  32. 32.9 + 1 =
  33. 33.There are 5 yellow balloons and 4 blue balloons. How many balloons are there in all?
  34. 34.17 + 2 =
  35. 35.12 + 4 =
  36. 36.Gurpreet has 15 balls and gets 3 balls more. How many balls does Gurpreet have now?
  37. 37.8 + 9 =
  38. 38.Aarav has 2 books and gets 2 books more. How many books does Aarav have now?
  39. 39.3 + 3 + 12 =
  40. 40.? + 11 = 13

Answer key

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

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