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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 306 · 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. 1.14 + 5 =
  2. 2.8 + 3 =
  3. 3.8 + ? = 11
  4. 4.Arjun has 11 pencils and gets 5 pencils more. How many pencils does Arjun have now?
  5. 5.8 + 6 =
  6. 6.14 + 3 =
  7. 7.13 + 5 =
  8. 8.10 + 9 =
  9. 9.1 + 3 =
  10. 10.19 + 1 =
  11. 11.2 + ? = 9
  12. 12.There are 2 yellow kites and 11 blue kites. How many kites are there in all?
  13. 13.7 + ? = 18
  14. 14.15 + 5 =
  15. 15.Kavya has 5 balls and gets 7 balls more. How many balls does Kavya have now?
  16. 16.1 + ? = 18
  17. 17.2 + 2 + 12 =
  18. 18.4 + 12 =
  19. 19.11 + ? = 13
  20. 20.Riya has 3 kites and gets 15 kites more. How many kites does Riya have now?
  21. 21.7 + ? = 14
  22. 22.2 + ? = 6
  23. 23.There are 8 red kites and 6 yellow kites. How many kites are there in all?
  24. 24.Pooja has 7 shells and gets 3 shells more. How many shells does Pooja have now?
  25. 25.4 + 8 + 3 =
  26. 26.9 + ? = 16
  27. 27.Aarav has 7 books and gets 7 books more. How many books does Aarav have now?
  28. 28.2 + 2 + 15 =
  29. 29.13 + 7 =
  30. 30.5 + 5 + 6 =
  31. 31.Zoya has 7 pencils and gets 4 pencils more. How many pencils does Zoya have now?
  32. 32.There are 10 red balloons and 7 pink balloons. How many balloons are there in all?
  33. 33.17 + 2 =
  34. 34.? + 1 = 5
  35. 35.11 + ? = 12
  36. 36.9 + 8 =
  37. 37.14 + 6 =
  38. 38.Ishaan has 2 shells and gets 1 shell more. How many shells does Ishaan have now?
  39. 39.5 + 9 =
  40. 40.Priya has 13 mangoes and gets 2 mangoes more. How many mangoes does Priya have now?

Answer key

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

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