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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 537 · 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. 1.5 + 6 + 4 =
  2. 2.Ananya has 3 balloons and gets 10 balloons more. How many balloons does Ananya have now?
  3. 3.? + 5 = 13
  4. 4.1 + ? = 3
  5. 5.8 + 2 + 9 =
  6. 6.There are 6 blue crayons and 13 white crayons. How many crayons are there in all?
  7. 7.Isha has 6 pencils and gets 1 pencil more. How many pencils does Isha have now?
  8. 8.2 + 6 + 1 =
  9. 9.4 + 1 + 13 =
  10. 10.Kabir has 2 flowers and gets 11 flowers more. How many flowers does Kabir have now?
  11. 11.There are 4 pink beads and 4 blue beads. How many beads are there in all?
  12. 12.There are 3 pink flowers and 6 white flowers. How many flowers are there in all?
  13. 13.? + 9 = 15
  14. 14.There are 4 yellow crayons and 2 red crayons. How many crayons are there in all?
  15. 15.? + 2 = 5
  16. 16.Lakshmi has 9 balloons and gets 7 balloons more. How many balloons does Lakshmi have now?
  17. 17.There are 6 pink balls and 9 red balls. How many balls are there in all?
  18. 18.5 + 3 + 11 =
  19. 19.6 + 6 + 2 =
  20. 20.There are 10 yellow crayons and 6 pink crayons. How many crayons are there in all?
  21. 21.6 + 7 + 2 =
  22. 22.There are 3 yellow balloons and 3 red balloons. How many balloons are there in all?
  23. 23.2 + 7 + 3 =
  24. 24.5 + 6 + 3 =
  25. 25.Ishaan has 9 books and gets 3 books more. How many books does Ishaan have now?
  26. 26.9 + 3 =
  27. 27.There are 11 blue beads and 6 pink beads. How many beads are there in all?
  28. 28.There are 8 white kites and 4 red kites. How many kites are there in all?
  29. 29.Rohan has 9 balloons and gets 7 balloons more. How many balloons does Rohan have now?
  30. 30.1 + 4 + 14 =
  31. 31.? + 2 = 7
  32. 32.There are 9 green balls and 5 pink balls. How many balls are there in all?
  33. 33.16 + 1 =
  34. 34.14 + 6 =
  35. 35.8 + 8 + 1 =
  36. 36.There are 9 blue kites and 3 yellow kites. How many kites are there in all?
  37. 37.Pooja has 3 marbles and gets 13 marbles more. How many marbles does Pooja have now?
  38. 38.6 + 13 =
  39. 39.10 + 9 =
  40. 40.15 + ? = 20

Answer key

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

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