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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 175 · 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 5 books and gets 9 books more. How many books does Aarav have now?
  2. 2.? + 5 = 9
  3. 3.Riya has 14 balloons and gets 1 balloon more. How many balloons does Riya have now?
  4. 4.4 + 6 =
  5. 5.Pooja has 6 balloons and gets 10 balloons more. How many balloons does Pooja have now?
  6. 6.18 + 2 =
  7. 7.6 + 3 + 10 =
  8. 8.11 + 9 =
  9. 9.12 + 6 =
  10. 10.2 + 12 =
  11. 11.There are 12 pink crayons and 8 white crayons. How many crayons are there in all?
  12. 12.5 + 2 + 10 =
  13. 13.There are 2 white balloons and 14 red balloons. How many balloons are there in all?
  14. 14.13 + ? = 17
  15. 15.? + 6 = 9
  16. 16.Joseph has 6 laddoos and gets 11 laddoos more. How many laddoos does Joseph have now?
  17. 17.4 + 4 + 12 =
  18. 18.Pooja has 8 shells and gets 3 shells more. How many shells does Pooja have now?
  19. 19.1 + ? = 4
  20. 20.Arjun has 6 books and gets 14 books more. How many books does Arjun have now?
  21. 21.There are 5 green kites and 4 yellow kites. How many kites are there in all?
  22. 22.4 + 3 + 8 =
  23. 23.15 + 5 =
  24. 24.4 + 2 + 8 =
  25. 25.11 + ? = 15
  26. 26.Dev has 5 marbles and gets 2 marbles more. How many marbles does Dev have now?
  27. 27.? + 6 = 10
  28. 28.8 + 1 =
  29. 29.3 + 6 + 7 =
  30. 30.? + 2 = 3
  31. 31.There are 12 yellow flowers and 7 pink flowers. How many flowers are there in all?
  32. 32.There are 4 red crayons and 15 white crayons. How many crayons are there in all?
  33. 33.18 + 1 =
  34. 34.6 + 1 + 11 =
  35. 35.3 + 5 =
  36. 36.? + 4 = 5
  37. 37.Aditya has 8 pencils and gets 2 pencils more. How many pencils does Aditya have now?
  38. 38.4 + ? = 19
  39. 39.There are 11 red balls and 8 blue balls. How many balls are there in all?
  40. 40.There are 8 pink kites and 4 red kites. How many kites are there in all?

Answer key

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

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