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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 479 · 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. 1.19 + 1 =
  2. 2.Sneha has 11 mangoes and gets 6 mangoes more. How many mangoes does Sneha have now?
  3. 3.? + 7 = 19
  4. 4.4 + 5 =
  5. 5.There are 8 blue crayons and 3 yellow crayons. How many crayons are there in all?
  6. 6.1 + 5 + 14 =
  7. 7.1 + 1 =
  8. 8.8 + ? = 13
  9. 9.Rahul has 3 marbles and gets 16 marbles more. How many marbles does Rahul have now?
  10. 10.? + 1 = 10
  11. 11.8 + 2 + 7 =
  12. 12.There are 7 yellow flowers and 3 pink flowers. How many flowers are there in all?
  13. 13.Meera has 4 pencils and gets 4 pencils more. How many pencils does Meera have now?
  14. 14.Joseph has 8 laddoos and gets 11 laddoos more. How many laddoos does Joseph have now?
  15. 15.17 + 2 =
  16. 16.16 + 3 =
  17. 17.11 + 8 =
  18. 18.2 + 3 =
  19. 19.? + 2 = 4
  20. 20.1 + ? = 12
  21. 21.1 + 1 + 4 =
  22. 22.Aarav has 8 balls and gets 10 balls more. How many balls does Aarav have now?
  23. 23.8 + ? = 14
  24. 24.3 + 7 =
  25. 25.7 + 2 + 4 =
  26. 26.Meera has 6 balloons and gets 14 balloons more. How many balloons does Meera have now?
  27. 27.8 + 1 + 5 =
  28. 28.There are 7 white crayons and 11 yellow crayons. How many crayons are there in all?
  29. 29.Aarav has 2 laddoos and gets 9 laddoos more. How many laddoos does Aarav have now?
  30. 30.13 + 2 =
  31. 31.Arjun has 9 kites and gets 11 kites more. How many kites does Arjun have now?
  32. 32.Dev has 5 balloons and gets 9 balloons more. How many balloons does Dev have now?
  33. 33.8 + 3 =
  34. 34.17 + 3 =
  35. 35.There are 4 pink balloons and 8 red balloons. How many balloons are there in all?
  36. 36.15 + 3 =
  37. 37.2 + ? = 8
  38. 38.4 + 13 =
  39. 39.There are 2 white balls and 17 pink balls. How many balls are there in all?
  40. 40.4 + 3 + 3 =

Answer key

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

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