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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 677 · 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. 1.1 + ? = 8
  2. 2.? + 4 = 8
  3. 3.1 + 10 =
  4. 4.1 + 5 + 13 =
  5. 5.Rohan has 4 kites and gets 7 kites more. How many kites does Rohan have now?
  6. 6.There are 8 pink balloons and 7 red balloons. How many balloons are there in all?
  7. 7.? + 3 = 4
  8. 8.3 + 6 + 6 =
  9. 9.Aarav has 7 balloons and gets 3 balloons more. How many balloons does Aarav have now?
  10. 10.There are 2 green kites and 18 blue kites. How many kites are there in all?
  11. 11.? + 7 = 20
  12. 12.1 + 16 =
  13. 13.6 + 3 + 11 =
  14. 14.1 + 7 + 12 =
  15. 15.3 + 3 =
  16. 16.2 + 1 + 3 =
  17. 17.5 + ? = 8
  18. 18.? + 4 = 14
  19. 19.There are 4 yellow crayons and 16 green crayons. How many crayons are there in all?
  20. 20.8 + ? = 18
  21. 21.Lakshmi has 5 laddoos and gets 3 laddoos more. How many laddoos does Lakshmi have now?
  22. 22.2 + 6 + 8 =
  23. 23.Ishaan has 13 balloons and gets 6 balloons more. How many balloons does Ishaan have now?
  24. 24.7 + 9 =
  25. 25.There are 4 green kites and 2 red kites. How many kites are there in all?
  26. 26.2 + ? = 8
  27. 27.6 + ? = 18
  28. 28.Saanvi has 5 pencils and gets 8 pencils more. How many pencils does Saanvi have now?
  29. 29.There are 5 blue balloons and 5 red balloons. How many balloons are there in all?
  30. 30.There are 5 red flowers and 14 green flowers. How many flowers are there in all?
  31. 31.4 + 4 + 10 =
  32. 32.Lakshmi has 10 pencils and gets 7 pencils more. How many pencils does Lakshmi have now?
  33. 33.8 + 5 =
  34. 34.There are 6 pink beads and 4 red beads. How many beads are there in all?
  35. 35.2 + 4 =
  36. 36.1 + 8 + 1 =
  37. 37.2 + ? = 3
  38. 38.6 + 8 + 3 =
  39. 39.6 + 13 =
  40. 40.Zoya has 7 balloons and gets 13 balloons more. How many balloons does Zoya have now?

Answer key

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

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