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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 801 · 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. 1.17 + 1 =
  2. 2.Farhan has 3 bananas and gets 6 bananas more. How many bananas does Farhan have now?
  3. 3.? + 8 = 17
  4. 4.There are 10 blue flowers and 4 white flowers. How many flowers are there in all?
  5. 5.1 + ? = 6
  6. 6.There are 6 white balloons and 3 pink balloons. How many balloons are there in all?
  7. 7.There are 6 pink kites and 3 blue kites. How many kites are there in all?
  8. 8.There are 6 red crayons and 4 yellow crayons. How many crayons are there in all?
  9. 9.Vivaan has 4 laddoos and gets 13 laddoos more. How many laddoos does Vivaan have now?
  10. 10.7 + 13 =
  11. 11.? + 1 = 7
  12. 12.? + 4 = 15
  13. 13.? + 4 = 10
  14. 14.Aarav has 15 kites and gets 1 kite more. How many kites does Aarav have now?
  15. 15.Riya has 11 balls and gets 8 balls more. How many balls does Riya have now?
  16. 16.Joseph has 7 balloons and gets 5 balloons more. How many balloons does Joseph have now?
  17. 17.10 + ? = 17
  18. 18.1 + ? = 3
  19. 19.1 + 1 + 11 =
  20. 20.5 + 4 + 1 =
  21. 21.17 + 2 =
  22. 22.1 + 1 + 1 =
  23. 23.? + 2 = 3
  24. 24.3 + 6 + 1 =
  25. 25.14 + 5 =
  26. 26.? + 11 = 18
  27. 27.? + 7 = 16
  28. 28.There are 6 green balls and 13 red balls. How many balls are there in all?
  29. 29.4 + 3 + 8 =
  30. 30.Rohan has 11 balls and gets 5 balls more. How many balls does Rohan have now?
  31. 31.2 + 13 =
  32. 32.Sneha has 5 pencils and gets 4 pencils more. How many pencils does Sneha have now?
  33. 33.Dev has 5 crayons and gets 2 crayons more. How many crayons does Dev have now?
  34. 34.18 + 1 =
  35. 35.Arjun has 14 kites and gets 6 kites more. How many kites does Arjun have now?
  36. 36.There are 8 pink balls and 5 red balls. How many balls are there in all?
  37. 37.1 + 4 + 6 =
  38. 38.3 + ? = 10
  39. 39.1 + 17 =
  40. 40.14 + 4 =

Answer key

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

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