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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 255 · 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 9 white flowers and 10 blue flowers. How many flowers are there in all?
  2. 2.5 + 6 + 9 =
  3. 3.Tara has 8 balloons and gets 6 balloons more. How many balloons does Tara have now?
  4. 4.Gurpreet has 4 kites and gets 14 kites more. How many kites does Gurpreet have now?
  5. 5.? + 1 = 7
  6. 6.7 + 4 + 3 =
  7. 7.? + 8 = 18
  8. 8.There are 8 white crayons and 5 red crayons. How many crayons are there in all?
  9. 9.17 + 1 =
  10. 10.Aditya has 6 bananas and gets 4 bananas more. How many bananas does Aditya have now?
  11. 11.There are 4 red beads and 5 blue beads. How many beads are there in all?
  12. 12.7 + 6 + 3 =
  13. 13.There are 2 pink crayons and 17 blue crayons. How many crayons are there in all?
  14. 14.5 + 13 =
  15. 15.1 + 5 + 13 =
  16. 16.2 + 6 + 11 =
  17. 17.16 + 3 =
  18. 18.3 + ? = 12
  19. 19.14 + 1 =
  20. 20.5 + 2 + 6 =
  21. 21.? + 2 = 6
  22. 22.3 + ? = 9
  23. 23.8 + 4 + 1 =
  24. 24.Ananya has 10 books and gets 10 books more. How many books does Ananya have now?
  25. 25.14 + 3 =
  26. 26.3 + 9 =
  27. 27.There are 6 red crayons and 2 yellow crayons. How many crayons are there in all?
  28. 28.There are 8 pink flowers and 5 green flowers. How many flowers are there in all?
  29. 29.There are 11 blue beads and 6 white beads. How many beads are there in all?
  30. 30.There are 3 white kites and 7 red kites. How many kites are there in all?
  31. 31.11 + ? = 20
  32. 32.? + 8 = 15
  33. 33.2 + 6 + 3 =
  34. 34.There are 7 green balloons and 12 white balloons. How many balloons are there in all?
  35. 35.15 + 3 =
  36. 36.There are 11 white kites and 5 red kites. How many kites are there in all?
  37. 37.2 + 3 + 3 =
  38. 38.Gurpreet has 10 mangoes and gets 3 mangoes more. How many mangoes does Gurpreet have now?
  39. 39.Ananya has 9 bananas and gets 9 bananas more. How many bananas does Ananya have now?
  40. 40.Rohan has 6 crayons and gets 4 crayons more. How many crayons does Rohan have now?

Answer key

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

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