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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 37 · 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 white flowers and 8 green flowers. How many flowers are there in all?
  2. 2.18 + 2 =
  3. 3.1 + 8 + 1 =
  4. 4.2 + 14 =
  5. 5.2 + ? = 6
  6. 6.17 + 1 =
  7. 7.6 + 14 =
  8. 8.There are 8 red beads and 11 blue beads. How many beads are there in all?
  9. 9.Arjun has 8 balloons and gets 4 balloons more. How many balloons does Arjun have now?
  10. 10.2 + 8 + 1 =
  11. 11.Farhan has 10 books and gets 8 books more. How many books does Farhan have now?
  12. 12.There are 8 yellow flowers and 10 pink flowers. How many flowers are there in all?
  13. 13.3 + ? = 4
  14. 14.8 + 1 + 7 =
  15. 15.3 + ? = 18
  16. 16.? + 1 = 10
  17. 17.8 + 7 + 5 =
  18. 18.Meera has 7 balls and gets 7 balls more. How many balls does Meera have now?
  19. 19.4 + 14 =
  20. 20.There are 9 blue crayons and 8 red crayons. How many crayons are there in all?
  21. 21.Ananya has 8 laddoos and gets 1 laddoo more. How many laddoos does Ananya have now?
  22. 22.14 + ? = 18
  23. 23.4 + 2 =
  24. 24.3 + ? = 6
  25. 25.? + 1 = 9
  26. 26.Ananya has 6 mangoes and gets 10 mangoes more. How many mangoes does Ananya have now?
  27. 27.There are 7 green beads and 2 white beads. How many beads are there in all?
  28. 28.3 + ? = 7
  29. 29.Isha has 9 laddoos and gets 9 laddoos more. How many laddoos does Isha have now?
  30. 30.12 + 8 =
  31. 31.There are 6 white crayons and 2 pink crayons. How many crayons are there in all?
  32. 32.6 + 1 =
  33. 33.? + 5 = 6
  34. 34.There are 5 pink balls and 14 white balls. How many balls are there in all?
  35. 35.2 + 8 + 5 =
  36. 36.Meera has 13 kites and gets 6 kites more. How many kites does Meera have now?
  37. 37.? + 7 = 17
  38. 38.? + 8 = 17
  39. 39.Aditya has 3 kites and gets 13 kites more. How many kites does Aditya have now?
  40. 40.1 + 7 + 5 =

Answer key

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

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