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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 974 · 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 5 blue flowers and 6 white flowers. How many flowers are there in all?
  2. 2.1 + 1 + 1 =
  3. 3.2 + 8 + 1 =
  4. 4.6 + 13 =
  5. 5.There are 2 red kites and 9 yellow kites. How many kites are there in all?
  6. 6.16 + 1 =
  7. 7.Lakshmi has 8 mangoes and gets 4 mangoes more. How many mangoes does Lakshmi have now?
  8. 8.There are 4 yellow balls and 10 green balls. How many balls are there in all?
  9. 9.? + 10 = 19
  10. 10.There are 10 yellow flowers and 4 white flowers. How many flowers are there in all?
  11. 11.Isha has 3 marbles and gets 7 marbles more. How many marbles does Isha have now?
  12. 12.There are 7 yellow crayons and 2 red crayons. How many crayons are there in all?
  13. 13.Rohan has 13 flowers and gets 2 flowers more. How many flowers does Rohan have now?
  14. 14.There are 3 yellow balloons and 6 white balloons. How many balloons are there in all?
  15. 15.There are 10 white crayons and 4 green crayons. How many crayons are there in all?
  16. 16.5 + 2 =
  17. 17.Ishaan has 13 balls and gets 1 ball more. How many balls does Ishaan have now?
  18. 18.? + 2 = 9
  19. 19.8 + ? = 10
  20. 20.6 + 2 =
  21. 21.19 + 1 =
  22. 22.6 + 1 + 10 =
  23. 23.Isha has 7 balloons and gets 7 balloons more. How many balloons does Isha have now?
  24. 24.Diya has 4 books and gets 8 books more. How many books does Diya have now?
  25. 25.6 + 8 =
  26. 26.Meera has 9 marbles and gets 10 marbles more. How many marbles does Meera have now?
  27. 27.There are 5 red balls and 14 yellow balls. How many balls are there in all?
  28. 28.11 + 1 =
  29. 29.6 + 1 + 3 =
  30. 30.10 + 5 =
  31. 31.8 + 4 =
  32. 32.There are 10 red flowers and 10 pink flowers. How many flowers are there in all?
  33. 33.17 + 2 =
  34. 34.3 + ? = 20
  35. 35.There are 4 red flowers and 2 blue flowers. How many flowers are there in all?
  36. 36.? + 3 = 4
  37. 37.? + 1 = 3
  38. 38.18 + 2 =
  39. 39.3 + 5 + 1 =
  40. 40.Joseph has 3 pencils and gets 1 pencil more. How many pencils does Joseph have now?

Answer key

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

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