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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 318 · 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. 1.1 + 3 + 5 =
  2. 2.9 + 9 =
  3. 3.There are 6 green balls and 9 blue balls. How many balls are there in all?
  4. 4.8 + 3 + 2 =
  5. 5.Dev has 3 balls and gets 4 balls more. How many balls does Dev have now?
  6. 6.There are 3 blue beads and 11 red beads. How many beads are there in all?
  7. 7.16 + 2 =
  8. 8.There are 8 yellow crayons and 12 white crayons. How many crayons are there in all?
  9. 9.2 + 15 =
  10. 10.2 + 4 + 1 =
  11. 11.10 + 8 =
  12. 12.1 + 3 =
  13. 13.There are 11 green kites and 9 red kites. How many kites are there in all?
  14. 14.Joseph has 9 kites and gets 3 kites more. How many kites does Joseph have now?
  15. 15.Lakshmi has 13 mangoes and gets 2 mangoes more. How many mangoes does Lakshmi have now?
  16. 16.5 + 2 =
  17. 17.1 + 1 + 2 =
  18. 18.Tara has 9 books and gets 5 books more. How many books does Tara have now?
  19. 19.3 + 2 + 3 =
  20. 20.There are 8 blue balloons and 7 red balloons. How many balloons are there in all?
  21. 21.8 + 3 =
  22. 22.There are 9 blue flowers and 9 yellow flowers. How many flowers are there in all?
  23. 23.There are 4 white flowers and 8 pink flowers. How many flowers are there in all?
  24. 24.Tara has 4 balls and gets 13 balls more. How many balls does Tara have now?
  25. 25.Rohan has 4 laddoos and gets 12 laddoos more. How many laddoos does Rohan have now?
  26. 26.15 + 1 =
  27. 27.4 + ? = 14
  28. 28.Arjun has 3 shells and gets 17 shells more. How many shells does Arjun have now?
  29. 29.There are 6 red balloons and 6 blue balloons. How many balloons are there in all?
  30. 30.8 + 4 =
  31. 31.Sneha has 14 balls and gets 1 ball more. How many balls does Sneha have now?
  32. 32.3 + 4 =
  33. 33.5 + ? = 6
  34. 34.7 + 10 =
  35. 35.There are 2 red flowers and 17 green flowers. How many flowers are there in all?
  36. 36.There are 12 green balloons and 3 red balloons. How many balloons are there in all?
  37. 37.There are 11 yellow flowers and 2 blue flowers. How many flowers are there in all?
  38. 38.Pooja has 15 mangoes and gets 3 mangoes more. How many mangoes does Pooja have now?
  39. 39.7 + 2 + 1 =
  40. 40.9 + ? = 10

Answer key

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

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