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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 455 · 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.Sneha has 9 pencils and gets 6 pencils more. How many pencils does Sneha have now?
  2. 2.17 + 1 =
  3. 3.6 + 5 + 7 =
  4. 4.3 + ? = 6
  5. 5.Ishaan has 11 flowers and gets 6 flowers more. How many flowers does Ishaan have now?
  6. 6.There are 3 red balls and 17 green balls. How many balls are there in all?
  7. 7.Arjun has 13 mangoes and gets 3 mangoes more. How many mangoes does Arjun have now?
  8. 8.5 + 3 + 6 =
  9. 9.? + 1 = 15
  10. 10.There are 6 blue kites and 8 yellow kites. How many kites are there in all?
  11. 11.Ishaan has 8 shells and gets 3 shells more. How many shells does Ishaan have now?
  12. 12.3 + 7 + 10 =
  13. 13.? + 1 = 3
  14. 14.2 + ? = 20
  15. 15.4 + ? = 6
  16. 16.2 + 6 + 7 =
  17. 17.Farhan has 2 kites and gets 5 kites more. How many kites does Farhan have now?
  18. 18.? + 1 = 5
  19. 19.? + 12 = 20
  20. 20.8 + ? = 12
  21. 21.1 + 1 + 14 =
  22. 22.9 + 6 =
  23. 23.Pooja has 14 laddoos and gets 1 laddoo more. How many laddoos does Pooja have now?
  24. 24.5 + 6 + 2 =
  25. 25.Joseph has 2 flowers and gets 3 flowers more. How many flowers does Joseph have now?
  26. 26.Rohan has 10 shells and gets 9 shells more. How many shells does Rohan have now?
  27. 27.There are 10 yellow kites and 2 green kites. How many kites are there in all?
  28. 28.Tara has 15 balloons and gets 3 balloons more. How many balloons does Tara have now?
  29. 29.3 + 2 + 3 =
  30. 30.1 + ? = 13
  31. 31.5 + ? = 7
  32. 32.2 + 4 + 14 =
  33. 33.? + 7 = 19
  34. 34.6 + 9 =
  35. 35.Aarav has 8 marbles and gets 10 marbles more. How many marbles does Aarav have now?
  36. 36.4 + 11 =
  37. 37.There are 7 red balls and 2 yellow balls. How many balls are there in all?
  38. 38.Diya has 12 balls and gets 2 balls more. How many balls does Diya have now?
  39. 39.2 + 2 + 1 =
  40. 40.Priya has 5 mangoes and gets 6 mangoes more. How many mangoes does Priya have now?

Answer key

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

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