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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 17 · 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.Arjun has 10 marbles and gets 10 marbles more. How many marbles does Arjun have now?
  2. 2.17 + 3 =
  3. 3.There are 2 blue balloons and 14 green balloons. How many balloons are there in all?
  4. 4.3 + ? = 6
  5. 5.There are 9 blue crayons and 7 pink crayons. How many crayons are there in all?
  6. 6.There are 10 white kites and 7 red kites. How many kites are there in all?
  7. 7.There are 3 yellow kites and 5 pink kites. How many kites are there in all?
  8. 8.There are 10 green crayons and 9 red crayons. How many crayons are there in all?
  9. 9.There are 2 pink flowers and 14 blue flowers. How many flowers are there in all?
  10. 10.7 + 2 + 5 =
  11. 11.There are 10 red kites and 3 blue kites. How many kites are there in all?
  12. 12.12 + 1 =
  13. 13.5 + 9 =
  14. 14.There are 9 red balls and 6 yellow balls. How many balls are there in all?
  15. 15.3 + 5 + 3 =
  16. 16.There are 2 red balloons and 2 pink balloons. How many balloons are there in all?
  17. 17.Arjun has 12 books and gets 2 books more. How many books does Arjun have now?
  18. 18.Priya has 4 books and gets 13 books more. How many books does Priya have now?
  19. 19.There are 4 red flowers and 13 green flowers. How many flowers are there in all?
  20. 20.Kabir has 14 books and gets 4 books more. How many books does Kabir have now?
  21. 21.There are 7 blue crayons and 10 pink crayons. How many crayons are there in all?
  22. 22.? + 6 = 9
  23. 23.Priya has 10 balls and gets 1 ball more. How many balls does Priya have now?
  24. 24.3 + 3 =
  25. 25.There are 11 blue beads and 7 green beads. How many beads are there in all?
  26. 26.There are 9 blue flowers and 8 pink flowers. How many flowers are there in all?
  27. 27.? + 12 = 13
  28. 28.1 + ? = 13
  29. 29.Sneha has 5 books and gets 13 books more. How many books does Sneha have now?
  30. 30.18 + 1 =
  31. 31.8 + 6 =
  32. 32.14 + 3 =
  33. 33.There are 4 pink balloons and 4 green balloons. How many balloons are there in all?
  34. 34.4 + 12 =
  35. 35.12 + ? = 15
  36. 36.Aarav has 7 bananas and gets 7 bananas more. How many bananas does Aarav have now?
  37. 37.Farhan has 6 shells and gets 13 shells more. How many shells does Farhan have now?
  38. 38.? + 6 = 15
  39. 39.Saanvi has 14 laddoos and gets 1 laddoo more. How many laddoos does Saanvi have now?
  40. 40.There are 2 red flowers and 16 green flowers. How many flowers are there in all?

Answer key

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

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