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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 878 · 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.? + 1 = 3
  2. 2.7 + 13 =
  3. 3.4 + 7 + 2 =
  4. 4.Lakshmi has 4 laddoos and gets 2 laddoos more. How many laddoos does Lakshmi have now?
  5. 5.There are 2 blue kites and 14 white kites. How many kites are there in all?
  6. 6.Pooja has 10 pencils and gets 10 pencils more. How many pencils does Pooja have now?
  7. 7.? + 2 = 5
  8. 8.3 + 8 =
  9. 9.6 + ? = 10
  10. 10.There are 4 blue flowers and 7 red flowers. How many flowers are there in all?
  11. 11.? + 13 = 16
  12. 12.There are 11 blue beads and 2 green beads. How many beads are there in all?
  13. 13.6 + 6 =
  14. 14.1 + 7 =
  15. 15.5 + 7 + 1 =
  16. 16.? + 3 = 10
  17. 17.7 + 3 + 5 =
  18. 18.8 + 8 + 4 =
  19. 19.7 + 1 + 1 =
  20. 20.12 + 8 =
  21. 21.3 + 8 + 4 =
  22. 22.Manav has 3 balloons and gets 2 balloons more. How many balloons does Manav have now?
  23. 23.11 + ? = 14
  24. 24.Zoya has 13 balls and gets 1 ball more. How many balls does Zoya have now?
  25. 25.5 + 8 + 5 =
  26. 26.There are 6 white kites and 11 green kites. How many kites are there in all?
  27. 27.5 + ? = 7
  28. 28.4 + 14 =
  29. 29.7 + 8 =
  30. 30.Farhan has 9 marbles and gets 11 marbles more. How many marbles does Farhan have now?
  31. 31.1 + 17 =
  32. 32.9 + 8 =
  33. 33.There are 7 yellow crayons and 11 green crayons. How many crayons are there in all?
  34. 34.19 + 1 =
  35. 35.There are 8 pink crayons and 9 blue crayons. How many crayons are there in all?
  36. 36.Saanvi has 5 bananas and gets 6 bananas more. How many bananas does Saanvi have now?
  37. 37.Lakshmi has 6 marbles and gets 11 marbles more. How many marbles does Lakshmi have now?
  38. 38.There are 3 yellow balloons and 16 pink balloons. How many balloons are there in all?
  39. 39.3 + 1 + 16 =
  40. 40.10 + 3 =

Answer key

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

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