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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 68 · 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. 1.13 + ? = 19
  2. 2.There are 3 white flowers and 16 green flowers. How many flowers are there in all?
  3. 3.1 + 8 + 4 =
  4. 4.Dev has 9 pencils and gets 4 pencils more. How many pencils does Dev have now?
  5. 5.7 + 2 + 3 =
  6. 6.16 + 3 =
  7. 7.16 + 1 =
  8. 8.There are 8 yellow beads and 3 red beads. How many beads are there in all?
  9. 9.There are 6 green crayons and 10 pink crayons. How many crayons are there in all?
  10. 10.There are 2 green flowers and 3 white flowers. How many flowers are there in all?
  11. 11.? + 3 = 4
  12. 12.There are 7 yellow balls and 7 pink balls. How many balls are there in all?
  13. 13.6 + 1 + 13 =
  14. 14.There are 4 white kites and 15 green kites. How many kites are there in all?
  15. 15.There are 4 red beads and 4 blue beads. How many beads are there in all?
  16. 16.3 + ? = 4
  17. 17.5 + 2 + 2 =
  18. 18.7 + 3 + 3 =
  19. 19.5 + 8 + 1 =
  20. 20.5 + ? = 13
  21. 21.Joseph has 15 flowers and gets 2 flowers more. How many flowers does Joseph have now?
  22. 22.9 + ? = 20
  23. 23.? + 1 = 5
  24. 24.7 + 8 + 4 =
  25. 25.2 + 13 =
  26. 26.Aarav has 4 shells and gets 11 shells more. How many shells does Aarav have now?
  27. 27.There are 10 yellow balloons and 9 pink balloons. How many balloons are there in all?
  28. 28.3 + 17 =
  29. 29.? + 1 = 12
  30. 30.7 + 12 =
  31. 31.13 + 1 =
  32. 32.Lakshmi has 3 pencils and gets 11 pencils more. How many pencils does Lakshmi have now?
  33. 33.15 + 5 =
  34. 34.There are 8 pink balloons and 4 blue balloons. How many balloons are there in all?
  35. 35.Nisha has 5 laddoos and gets 8 laddoos more. How many laddoos does Nisha have now?
  36. 36.Manav has 10 balls and gets 1 ball more. How many balls does Manav have now?
  37. 37.Zoya has 6 flowers and gets 12 flowers more. How many flowers does Zoya have now?
  38. 38.5 + 7 + 7 =
  39. 39.6 + 4 + 2 =
  40. 40.1 + 1 =

Answer key

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

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