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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 249 · 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. 1.10 + ? = 15
  2. 2.6 + ? = 8
  3. 3.Saanvi has 7 books and gets 4 books more. How many books does Saanvi have now?
  4. 4.? + 3 = 4
  5. 5.7 + 2 + 6 =
  6. 6.Aditya has 4 shells and gets 5 shells more. How many shells does Aditya have now?
  7. 7.6 + 6 + 5 =
  8. 8.6 + 2 + 5 =
  9. 9.1 + 4 + 11 =
  10. 10.Kabir has 6 bananas and gets 6 bananas more. How many bananas does Kabir have now?
  11. 11.There are 12 pink balloons and 5 white balloons. How many balloons are there in all?
  12. 12.18 + 2 =
  13. 13.? + 8 = 12
  14. 14.? + 4 = 9
  15. 15.Manav has 13 pencils and gets 3 pencils more. How many pencils does Manav have now?
  16. 16.There are 11 white flowers and 5 green flowers. How many flowers are there in all?
  17. 17.There are 8 white crayons and 11 red crayons. How many crayons are there in all?
  18. 18.5 + 7 + 1 =
  19. 19.Arjun has 7 laddoos and gets 13 laddoos more. How many laddoos does Arjun have now?
  20. 20.5 + 5 + 6 =
  21. 21.Aditya has 10 laddoos and gets 5 laddoos more. How many laddoos does Aditya have now?
  22. 22.Sneha has 14 laddoos and gets 6 laddoos more. How many laddoos does Sneha have now?
  23. 23.4 + ? = 5
  24. 24.4 + 14 =
  25. 25.Ananya has 8 balls and gets 7 balls more. How many balls does Ananya have now?
  26. 26.Priya has 14 balls and gets 3 balls more. How many balls does Priya have now?
  27. 27.2 + 13 =
  28. 28.Priya has 7 books and gets 11 books more. How many books does Priya have now?
  29. 29.? + 2 = 7
  30. 30.There are 7 blue flowers and 10 green flowers. How many flowers are there in all?
  31. 31.There are 2 red crayons and 3 green crayons. How many crayons are there in all?
  32. 32.1 + 5 + 4 =
  33. 33.Meera has 8 books and gets 6 books more. How many books does Meera have now?
  34. 34.? + 1 = 20
  35. 35.9 + 5 =
  36. 36.2 + 2 =
  37. 37.Diya has 14 kites and gets 4 kites more. How many kites does Diya have now?
  38. 38.3 + ? = 11
  39. 39.5 + ? = 20
  40. 40.There are 9 white flowers and 4 red flowers. How many flowers are there in all?

Answer key

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

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