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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 136 · 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 yellow balls and 9 red balls. How many balls are there in all?
  2. 2.Ananya has 4 books and gets 11 books more. How many books does Ananya have now?
  3. 3.10 + 1 =
  4. 4.10 + ? = 14
  5. 5.3 + 2 + 10 =
  6. 6.2 + 4 + 5 =
  7. 7.Farhan has 10 pencils and gets 4 pencils more. How many pencils does Farhan have now?
  8. 8.3 + ? = 4
  9. 9.2 + 9 =
  10. 10.There are 4 pink crayons and 5 blue crayons. How many crayons are there in all?
  11. 11.? + 1 = 3
  12. 12.8 + 4 =
  13. 13.Rohan has 5 marbles and gets 5 marbles more. How many marbles does Rohan have now?
  14. 14.There are 2 green balls and 16 blue balls. How many balls are there in all?
  15. 15.12 + 8 =
  16. 16.8 + 5 + 2 =
  17. 17.6 + 1 =
  18. 18.There are 7 green balloons and 9 pink balloons. How many balloons are there in all?
  19. 19.There are 2 pink balloons and 17 blue balloons. How many balloons are there in all?
  20. 20.Joseph has 2 laddoos and gets 10 laddoos more. How many laddoos does Joseph have now?
  21. 21.? + 5 = 6
  22. 22.1 + 13 =
  23. 23.Ananya has 3 books and gets 9 books more. How many books does Ananya have now?
  24. 24.7 + 2 + 2 =
  25. 25.4 + 5 =
  26. 26.16 + 3 =
  27. 27.2 + 2 =
  28. 28.Dev has 9 pencils and gets 7 pencils more. How many pencils does Dev have now?
  29. 29.3 + 16 =
  30. 30.Meera has 13 balloons and gets 3 balloons more. How many balloons does Meera have now?
  31. 31.17 + 3 =
  32. 32.There are 11 yellow balls and 2 red balls. How many balls are there in all?
  33. 33.10 + 3 =
  34. 34.6 + 5 =
  35. 35.There are 4 blue flowers and 10 red flowers. How many flowers are there in all?
  36. 36.8 + 5 + 4 =
  37. 37.1 + 10 =
  38. 38.19 + 1 =
  39. 39.? + 6 = 16
  40. 40.There are 7 yellow beads and 7 white beads. How many beads are there in all?

Answer key

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

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