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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 854 · 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. 1.7 + 6 + 7 =
  2. 2.Kavya has 8 books and gets 3 books more. How many books does Kavya have now?
  3. 3.4 + 5 + 4 =
  4. 4.3 + 5 + 8 =
  5. 5.There are 12 green balls and 3 pink balls. How many balls are there in all?
  6. 6.3 + 13 =
  7. 7.5 + 6 =
  8. 8.1 + ? = 5
  9. 9.There are 6 red balloons and 2 white balloons. How many balloons are there in all?
  10. 10.There are 4 red kites and 7 pink kites. How many kites are there in all?
  11. 11.? + 4 = 17
  12. 12.7 + 1 =
  13. 13.7 + 7 + 5 =
  14. 14.There are 12 white balls and 8 red balls. How many balls are there in all?
  15. 15.1 + 4 + 1 =
  16. 16.4 + 13 =
  17. 17.Ishaan has 14 shells and gets 1 shell more. How many shells does Ishaan have now?
  18. 18.? + 13 = 16
  19. 19.? + 1 = 18
  20. 20.6 + 7 + 5 =
  21. 21.1 + ? = 8
  22. 22.Saanvi has 7 kites and gets 7 kites more. How many kites does Saanvi have now?
  23. 23.3 + 1 + 4 =
  24. 24.5 + 1 =
  25. 25.Rohan has 15 laddoos and gets 1 laddoo more. How many laddoos does Rohan have now?
  26. 26.There are 10 green balls and 3 yellow balls. How many balls are there in all?
  27. 27.4 + 5 =
  28. 28.? + 2 = 13
  29. 29.There are 4 yellow crayons and 4 white crayons. How many crayons are there in all?
  30. 30.4 + ? = 16
  31. 31.? + 11 = 17
  32. 32.There are 9 yellow balls and 4 pink balls. How many balls are there in all?
  33. 33.4 + 6 + 5 =
  34. 34.17 + ? = 19
  35. 35.6 + ? = 18
  36. 36.5 + ? = 9
  37. 37.4 + 3 + 13 =
  38. 38.3 + 16 =
  39. 39.There are 3 green kites and 16 blue kites. How many kites are there in all?
  40. 40.There are 10 white balloons and 7 red balloons. How many balloons are there in all?

Answer key

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

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