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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 211 · 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.Joseph has 15 laddoos and gets 1 laddoo more. How many laddoos does Joseph have now?
  2. 2.Nisha has 14 books and gets 5 books more. How many books does Nisha have now?
  3. 3.There are 4 white kites and 5 blue kites. How many kites are there in all?
  4. 4.3 + 4 + 10 =
  5. 5.? + 9 = 15
  6. 6.5 + 7 + 7 =
  7. 7.2 + 6 + 11 =
  8. 8.9 + 6 =
  9. 9.Dev has 3 kites and gets 13 kites more. How many kites does Dev have now?
  10. 10.3 + ? = 6
  11. 11.15 + 3 =
  12. 12.? + 4 = 9
  13. 13.16 + 3 =
  14. 14.There are 4 yellow kites and 16 green kites. How many kites are there in all?
  15. 15.? + 3 = 4
  16. 16.There are 2 green flowers and 12 blue flowers. How many flowers are there in all?
  17. 17.3 + 3 + 14 =
  18. 18.Ishaan has 14 balls and gets 5 balls more. How many balls does Ishaan have now?
  19. 19.15 + 2 =
  20. 20.2 + 2 + 8 =
  21. 21.16 + 1 =
  22. 22.There are 9 pink kites and 3 green kites. How many kites are there in all?
  23. 23.6 + 5 + 3 =
  24. 24.2 + 2 + 15 =
  25. 25.Meera has 12 balloons and gets 6 balloons more. How many balloons does Meera have now?
  26. 26.There are 6 white kites and 5 red kites. How many kites are there in all?
  27. 27.6 + 7 =
  28. 28.1 + 4 + 2 =
  29. 29.There are 2 pink crayons and 5 red crayons. How many crayons are there in all?
  30. 30.There are 8 yellow crayons and 10 red crayons. How many crayons are there in all?
  31. 31.There are 7 white flowers and 5 red flowers. How many flowers are there in all?
  32. 32.There are 3 yellow crayons and 14 red crayons. How many crayons are there in all?
  33. 33.? + 3 = 10
  34. 34.5 + 8 + 3 =
  35. 35.4 + 5 =
  36. 36.There are 5 red kites and 4 blue kites. How many kites are there in all?
  37. 37.7 + ? = 10
  38. 38.There are 4 green beads and 5 blue beads. How many beads are there in all?
  39. 39.10 + ? = 16
  40. 40.Riya has 15 marbles and gets 2 marbles more. How many marbles does Riya have now?

Answer key

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

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