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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 364 · 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.There are 11 blue balloons and 6 green balloons. How many balloons are there in all?
  2. 2.5 + ? = 6
  3. 3.13 + 2 =
  4. 4.8 + 7 + 4 =
  5. 5.8 + 12 =
  6. 6.? + 3 = 16
  7. 7.10 + ? = 17
  8. 8.Priya has 9 balloons and gets 11 balloons more. How many balloons does Priya have now?
  9. 9.Meera has 11 laddoos and gets 7 laddoos more. How many laddoos does Meera have now?
  10. 10.? + 18 = 19
  11. 11.Gurpreet has 7 kites and gets 11 kites more. How many kites does Gurpreet have now?
  12. 12.1 + 5 + 11 =
  13. 13.1 + 8 + 6 =
  14. 14.There are 6 red beads and 14 yellow beads. How many beads are there in all?
  15. 15.Saanvi has 12 bananas and gets 7 bananas more. How many bananas does Saanvi have now?
  16. 16.Ishaan has 11 laddoos and gets 1 laddoo more. How many laddoos does Ishaan have now?
  17. 17.2 + ? = 20
  18. 18.4 + 16 =
  19. 19.? + 1 = 7
  20. 20.Joseph has 12 kites and gets 8 kites more. How many kites does Joseph have now?
  21. 21.6 + 14 =
  22. 22.14 + 6 =
  23. 23.2 + ? = 12
  24. 24.7 + 8 + 5 =
  25. 25.There are 12 white beads and 2 green beads. How many beads are there in all?
  26. 26.6 + 7 + 6 =
  27. 27.Ishaan has 9 shells and gets 7 shells more. How many shells does Ishaan have now?
  28. 28.Gurpreet has 9 shells and gets 11 shells more. How many shells does Gurpreet have now?
  29. 29.There are 4 green kites and 12 blue kites. How many kites are there in all?
  30. 30.There are 10 blue kites and 2 green kites. How many kites are there in all?
  31. 31.2 + 1 + 3 =
  32. 32.Priya has 11 marbles and gets 1 marble more. How many marbles does Priya have now?
  33. 33.1 + 7 + 2 =
  34. 34.2 + 8 + 2 =
  35. 35.? + 1 = 12
  36. 36.8 + 3 + 2 =
  37. 37.7 + 13 =
  38. 38.There are 10 yellow beads and 4 green beads. How many beads are there in all?
  39. 39.2 + ? = 6
  40. 40.There are 8 white crayons and 12 green crayons. How many crayons are there in all?

Answer key

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

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