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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 779 · 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 8 balls and gets 3 balls more. How many balls does Aarav have now?
  2. 2.Farhan has 6 marbles and gets 12 marbles more. How many marbles does Farhan have now?
  3. 3.? + 4 = 18
  4. 4.There are 8 red balls and 11 white balls. How many balls are there in all?
  5. 5.6 + 5 + 3 =
  6. 6.? + 1 = 5
  7. 7.There are 9 red flowers and 11 yellow flowers. How many flowers are there in all?
  8. 8.15 + ? = 19
  9. 9.3 + ? = 18
  10. 10.2 + 7 + 4 =
  11. 11.? + 16 = 17
  12. 12.3 + 1 + 5 =
  13. 13.? + 9 = 13
  14. 14.3 + 2 =
  15. 15.There are 9 pink kites and 8 red kites. How many kites are there in all?
  16. 16.? + 7 = 9
  17. 17.Riya has 15 shells and gets 4 shells more. How many shells does Riya have now?
  18. 18.8 + 8 + 4 =
  19. 19.? + 5 = 10
  20. 20.1 + 14 =
  21. 21.? + 5 = 7
  22. 22.3 + 11 =
  23. 23.18 + 1 =
  24. 24.Riya has 5 balls and gets 11 balls more. How many balls does Riya have now?
  25. 25.8 + 3 + 3 =
  26. 26.There are 10 red flowers and 3 green flowers. How many flowers are there in all?
  27. 27.10 + ? = 12
  28. 28.16 + 1 =
  29. 29.12 + 2 =
  30. 30.Sneha has 8 books and gets 10 books more. How many books does Sneha have now?
  31. 31.1 + 15 =
  32. 32.10 + 1 =
  33. 33.10 + 8 =
  34. 34.5 + 10 =
  35. 35.Pooja has 10 kites and gets 9 kites more. How many kites does Pooja have now?
  36. 36.12 + 7 =
  37. 37.There are 12 red flowers and 5 white flowers. How many flowers are there in all?
  38. 38.4 + 6 + 10 =
  39. 39.1 + 3 + 15 =
  40. 40.2 + 3 =

Answer key

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

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