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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 891 · 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. 1.16 + ? = 20
  2. 2.Karan has 3 bananas and gets 16 bananas more. How many bananas does Karan have now?
  3. 3.11 + 6 =
  4. 4.? + 2 = 12
  5. 5.7 + ? = 14
  6. 6.5 + 1 + 4 =
  7. 7.3 + 16 =
  8. 8.? + 5 = 16
  9. 9.3 + 4 + 2 =
  10. 10.Arjun has 3 balls and gets 7 balls more. How many balls does Arjun have now?
  11. 11.2 + ? = 6
  12. 12.8 + 3 =
  13. 13.5 + 10 =
  14. 14.There are 2 blue crayons and 8 red crayons. How many crayons are there in all?
  15. 15.There are 4 yellow beads and 6 red beads. How many beads are there in all?
  16. 16.There are 2 yellow beads and 11 white beads. How many beads are there in all?
  17. 17.There are 12 red kites and 3 yellow kites. How many kites are there in all?
  18. 18.There are 6 blue balloons and 13 yellow balloons. How many balloons are there in all?
  19. 19.8 + 3 + 9 =
  20. 20.Karan has 12 flowers and gets 2 flowers more. How many flowers does Karan have now?
  21. 21.9 + ? = 11
  22. 22.There are 2 blue flowers and 7 yellow flowers. How many flowers are there in all?
  23. 23.1 + 8 + 8 =
  24. 24.Farhan has 4 flowers and gets 7 flowers more. How many flowers does Farhan have now?
  25. 25.8 + 4 + 2 =
  26. 26.There are 10 yellow crayons and 4 green crayons. How many crayons are there in all?
  27. 27.? + 1 = 7
  28. 28.? + 4 = 6
  29. 29.4 + 3 =
  30. 30.There are 9 pink balloons and 5 red balloons. How many balloons are there in all?
  31. 31.2 + ? = 7
  32. 32.There are 10 red balloons and 8 blue balloons. How many balloons are there in all?
  33. 33.10 + 9 =
  34. 34.Ishaan has 9 laddoos and gets 1 laddoo more. How many laddoos does Ishaan have now?
  35. 35.Joseph has 8 kites and gets 8 kites more. How many kites does Joseph have now?
  36. 36.There are 2 white kites and 10 blue kites. How many kites are there in all?
  37. 37.Kabir has 9 balloons and gets 5 balloons more. How many balloons does Kabir have now?
  38. 38.There are 8 red crayons and 3 pink crayons. How many crayons are there in all?
  39. 39.6 + 3 =
  40. 40.There are 6 green beads and 14 red beads. How many beads are there in all?

Answer key

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

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