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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 766 · 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. 1.6 + 8 + 6 =
  2. 2.8 + 5 + 1 =
  3. 3.3 + 6 + 3 =
  4. 4.7 + 7 + 4 =
  5. 5.Riya has 8 laddoos and gets 5 laddoos more. How many laddoos does Riya have now?
  6. 6.4 + 8 + 3 =
  7. 7.12 + 5 =
  8. 8.10 + 2 =
  9. 9.There are 7 white kites and 7 yellow kites. How many kites are there in all?
  10. 10.5 + 8 =
  11. 11.7 + 1 + 4 =
  12. 12.? + 8 = 19
  13. 13.There are 9 green flowers and 10 blue flowers. How many flowers are there in all?
  14. 14.Sneha has 5 laddoos and gets 2 laddoos more. How many laddoos does Sneha have now?
  15. 15.There are 7 blue flowers and 12 red flowers. How many flowers are there in all?
  16. 16.1 + ? = 7
  17. 17.There are 4 red beads and 10 blue beads. How many beads are there in all?
  18. 18.18 + 2 =
  19. 19.5 + ? = 12
  20. 20.There are 9 yellow flowers and 2 red flowers. How many flowers are there in all?
  21. 21.Aarav has 12 laddoos and gets 7 laddoos more. How many laddoos does Aarav have now?
  22. 22.There are 8 yellow flowers and 6 white flowers. How many flowers are there in all?
  23. 23.2 + 16 =
  24. 24.Rohan has 14 books and gets 1 book more. How many books does Rohan have now?
  25. 25.4 + 6 + 5 =
  26. 26.2 + 4 + 3 =
  27. 27.There are 11 blue balls and 8 yellow balls. How many balls are there in all?
  28. 28.4 + 2 + 10 =
  29. 29.8 + 2 =
  30. 30.? + 9 = 16
  31. 31.There are 8 yellow crayons and 3 white crayons. How many crayons are there in all?
  32. 32.There are 6 blue balls and 14 white balls. How many balls are there in all?
  33. 33.? + 1 = 6
  34. 34.2 + 14 =
  35. 35.7 + 13 =
  36. 36.Lakshmi has 15 laddoos and gets 1 laddoo more. How many laddoos does Lakshmi have now?
  37. 37.There are 5 blue kites and 13 red kites. How many kites are there in all?
  38. 38.Isha has 15 shells and gets 5 shells more. How many shells does Isha have now?
  39. 39.Diya has 7 flowers and gets 3 flowers more. How many flowers does Diya have now?
  40. 40.? + 1 = 8

Answer key

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

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