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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 990 · 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. 1.6 + 14 =
  2. 2.There are 9 green balloons and 2 blue balloons. How many balloons are there in all?
  3. 3.Zoya has 11 laddoos and gets 1 laddoo more. How many laddoos does Zoya have now?
  4. 4.3 + 11 =
  5. 5.4 + ? = 12
  6. 6.There are 12 green crayons and 4 red crayons. How many crayons are there in all?
  7. 7.8 + 10 =
  8. 8.? + 11 = 17
  9. 9.4 + ? = 7
  10. 10.7 + 5 + 5 =
  11. 11.There are 11 white balloons and 2 blue balloons. How many balloons are there in all?
  12. 12.10 + 7 =
  13. 13.There are 9 red balloons and 4 blue balloons. How many balloons are there in all?
  14. 14.5 + 3 =
  15. 15.There are 10 blue flowers and 7 yellow flowers. How many flowers are there in all?
  16. 16.11 + 2 =
  17. 17.7 + 13 =
  18. 18.Ishaan has 3 laddoos and gets 3 laddoos more. How many laddoos does Ishaan have now?
  19. 19.? + 6 = 18
  20. 20.8 + 6 + 6 =
  21. 21.Ishaan has 8 kites and gets 1 kite more. How many kites does Ishaan have now?
  22. 22.2 + ? = 8
  23. 23.5 + 7 + 2 =
  24. 24.4 + 15 =
  25. 25.4 + 6 + 6 =
  26. 26.There are 12 red kites and 8 green kites. How many kites are there in all?
  27. 27.Priya has 2 shells and gets 4 shells more. How many shells does Priya have now?
  28. 28.5 + 4 =
  29. 29.15 + 5 =
  30. 30.2 + 7 =
  31. 31.5 + 5 + 10 =
  32. 32.There are 9 white kites and 4 blue kites. How many kites are there in all?
  33. 33.? + 1 = 17
  34. 34.5 + 1 + 2 =
  35. 35.There are 10 blue balls and 3 pink balls. How many balls are there in all?
  36. 36.4 + 5 + 2 =
  37. 37.There are 8 red kites and 4 yellow kites. How many kites are there in all?
  38. 38.? + 9 = 17
  39. 39.Saanvi has 3 laddoos and gets 13 laddoos more. How many laddoos does Saanvi have now?
  40. 40.Rohan has 4 bananas and gets 13 bananas more. How many bananas does Rohan have now?

Answer key

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

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