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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 759 · 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.There are 3 pink kites and 2 blue kites. How many kites are there in all?
  2. 2.There are 12 yellow balls and 2 green balls. How many balls are there in all?
  3. 3.Arjun has 11 marbles and gets 5 marbles more. How many marbles does Arjun have now?
  4. 4.There are 12 red balloons and 2 pink balloons. How many balloons are there in all?
  5. 5.9 + 4 =
  6. 6.5 + ? = 8
  7. 7.? + 11 = 14
  8. 8.14 + 5 =
  9. 9.13 + 4 =
  10. 10.There are 11 green beads and 4 white beads. How many beads are there in all?
  11. 11.? + 3 = 5
  12. 12.2 + 2 =
  13. 13.11 + 5 =
  14. 14.Kabir has 2 laddoos and gets 15 laddoos more. How many laddoos does Kabir have now?
  15. 15.? + 1 = 3
  16. 16.Tara has 4 shells and gets 13 shells more. How many shells does Tara have now?
  17. 17.Rohan has 11 marbles and gets 3 marbles more. How many marbles does Rohan have now?
  18. 18.There are 6 green kites and 3 white kites. How many kites are there in all?
  19. 19.Aditya has 13 laddoos and gets 3 laddoos more. How many laddoos does Aditya have now?
  20. 20.18 + 2 =
  21. 21.2 + 14 =
  22. 22.3 + 4 + 10 =
  23. 23.2 + 1 + 15 =
  24. 24.Priya has 14 shells and gets 5 shells more. How many shells does Priya have now?
  25. 25.1 + 3 + 1 =
  26. 26.4 + 6 =
  27. 27.11 + 7 =
  28. 28.8 + ? = 9
  29. 29.1 + 8 + 2 =
  30. 30.Rahul has 8 books and gets 12 books more. How many books does Rahul have now?
  31. 31.Riya has 5 books and gets 7 books more. How many books does Riya have now?
  32. 32.4 + ? = 8
  33. 33.1 + 14 =
  34. 34.There are 10 red balls and 8 pink balls. How many balls are there in all?
  35. 35.6 + 1 + 9 =
  36. 36.? + 9 = 13
  37. 37.? + 1 = 4
  38. 38.10 + 8 =
  39. 39.? + 6 = 17
  40. 40.? + 10 = 11

Answer key

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

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