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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 998 · 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. 1.16 + 2 =
  2. 2.? + 10 = 19
  3. 3.6 + 8 =
  4. 4.Aditya has 3 balls and gets 17 balls more. How many balls does Aditya have now?
  5. 5.Meera has 9 kites and gets 2 kites more. How many kites does Meera have now?
  6. 6.2 + 3 + 12 =
  7. 7.13 + 6 =
  8. 8.4 + 4 + 5 =
  9. 9.There are 12 pink beads and 8 yellow beads. How many beads are there in all?
  10. 10.9 + 2 =
  11. 11.7 + 6 + 2 =
  12. 12.6 + 1 + 13 =
  13. 13.6 + 5 + 2 =
  14. 14.? + 2 = 5
  15. 15.4 + 8 + 5 =
  16. 16.There are 8 white flowers and 8 pink flowers. How many flowers are there in all?
  17. 17.17 + 3 =
  18. 18.There are 6 red beads and 14 green beads. How many beads are there in all?
  19. 19.There are 5 red kites and 6 pink kites. How many kites are there in all?
  20. 20.5 + 3 + 7 =
  21. 21.15 + 2 =
  22. 22.Rohan has 7 shells and gets 6 shells more. How many shells does Rohan have now?
  23. 23.? + 1 = 3
  24. 24.Rohan has 9 mangoes and gets 6 mangoes more. How many mangoes does Rohan have now?
  25. 25.Riya has 4 shells and gets 14 shells more. How many shells does Riya have now?
  26. 26.There are 6 pink crayons and 10 yellow crayons. How many crayons are there in all?
  27. 27.4 + ? = 10
  28. 28.Aditya has 11 mangoes and gets 6 mangoes more. How many mangoes does Aditya have now?
  29. 29.3 + 4 + 10 =
  30. 30.Joseph has 8 balloons and gets 8 balloons more. How many balloons does Joseph have now?
  31. 31.5 + 2 + 6 =
  32. 32.? + 7 = 14
  33. 33.? + 10 = 16
  34. 34.There are 3 yellow flowers and 11 pink flowers. How many flowers are there in all?
  35. 35.18 + 2 =
  36. 36.Riya has 5 flowers and gets 15 flowers more. How many flowers does Riya have now?
  37. 37.Saanvi has 6 books and gets 1 book more. How many books does Saanvi have now?
  38. 38.? + 6 = 17
  39. 39.5 + ? = 16
  40. 40.2 + 10 =

Answer key

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

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