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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 873 · 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.Rohan has 10 mangoes and gets 8 mangoes more. How many mangoes does Rohan have now?
  2. 2.3 + 8 + 8 =
  3. 3.? + 1 = 13
  4. 4.There are 11 pink flowers and 7 yellow flowers. How many flowers are there in all?
  5. 5.Aditya has 6 balloons and gets 3 balloons more. How many balloons does Aditya have now?
  6. 6.Joseph has 4 shells and gets 9 shells more. How many shells does Joseph have now?
  7. 7.Aarav has 9 bananas and gets 7 bananas more. How many bananas does Aarav have now?
  8. 8.2 + ? = 13
  9. 9.4 + 10 =
  10. 10.3 + 6 + 8 =
  11. 11.1 + 7 + 11 =
  12. 12.19 + 1 =
  13. 13.16 + 1 =
  14. 14.There are 11 blue kites and 5 red kites. How many kites are there in all?
  15. 15.2 + 8 + 1 =
  16. 16.6 + 12 =
  17. 17.Riya has 10 mangoes and gets 5 mangoes more. How many mangoes does Riya have now?
  18. 18.1 + 8 + 4 =
  19. 19.11 + 1 =
  20. 20.10 + ? = 14
  21. 21.5 + 8 =
  22. 22.Dev has 10 pencils and gets 1 pencil more. How many pencils does Dev have now?
  23. 23.There are 3 white kites and 9 blue kites. How many kites are there in all?
  24. 24.11 + ? = 15
  25. 25.There are 8 yellow balls and 2 green balls. How many balls are there in all?
  26. 26.7 + 1 + 3 =
  27. 27.? + 7 = 8
  28. 28.Dev has 2 crayons and gets 11 crayons more. How many crayons does Dev have now?
  29. 29.18 + 2 =
  30. 30.2 + 18 =
  31. 31.14 + 1 =
  32. 32.There are 12 yellow balls and 6 red balls. How many balls are there in all?
  33. 33.5 + 9 =
  34. 34.10 + 1 =
  35. 35.7 + 7 =
  36. 36.8 + 2 + 8 =
  37. 37.10 + 6 =
  38. 38.There are 5 pink beads and 6 blue beads. How many beads are there in all?
  39. 39.Tara has 15 kites and gets 5 kites more. How many kites does Tara have now?
  40. 40.3 + 3 =

Answer key

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

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