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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 264 · 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 = 14
  2. 2.There are 8 pink crayons and 7 white crayons. How many crayons are there in all?
  3. 3.Farhan has 8 crayons and gets 2 crayons more. How many crayons does Farhan have now?
  4. 4.? + 1 = 7
  5. 5.17 + 1 =
  6. 6.6 + 7 + 1 =
  7. 7.Tara has 4 pencils and gets 1 pencil more. How many pencils does Tara have now?
  8. 8.1 + 9 =
  9. 9.6 + 2 =
  10. 10.3 + 2 + 6 =
  11. 11.1 + 14 =
  12. 12.2 + ? = 7
  13. 13.7 + 10 =
  14. 14.Joseph has 7 balls and gets 2 balls more. How many balls does Joseph have now?
  15. 15.13 + 6 =
  16. 16.4 + 10 =
  17. 17.2 + 2 + 12 =
  18. 18.Gurpreet has 10 marbles and gets 1 marble more. How many marbles does Gurpreet have now?
  19. 19.Rohan has 15 balloons and gets 4 balloons more. How many balloons does Rohan have now?
  20. 20.There are 7 yellow crayons and 4 white crayons. How many crayons are there in all?
  21. 21.12 + 4 =
  22. 22.Diya has 10 bananas and gets 5 bananas more. How many bananas does Diya have now?
  23. 23.3 + 13 =
  24. 24.3 + 8 + 8 =
  25. 25.There are 9 red balloons and 11 white balloons. How many balloons are there in all?
  26. 26.3 + 3 =
  27. 27.8 + ? = 18
  28. 28.13 + 4 =
  29. 29.19 + 1 =
  30. 30.8 + 2 + 8 =
  31. 31.1 + 1 =
  32. 32.There are 11 red flowers and 8 white flowers. How many flowers are there in all?
  33. 33.3 + 2 + 3 =
  34. 34.There are 8 white balloons and 7 pink balloons. How many balloons are there in all?
  35. 35.? + 6 = 11
  36. 36.There are 9 blue crayons and 3 pink crayons. How many crayons are there in all?
  37. 37.There are 9 red crayons and 3 yellow crayons. How many crayons are there in all?
  38. 38.Saanvi has 7 balloons and gets 2 balloons more. How many balloons does Saanvi have now?
  39. 39.There are 3 green kites and 5 pink kites. How many kites are there in all?
  40. 40.8 + 3 + 9 =

Answer key

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

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