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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 29 · 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. 1.8 + 9 =
  2. 2.3 + 3 =
  3. 3.Isha has 2 mangoes and gets 15 mangoes more. How many mangoes does Isha have now?
  4. 4.? + 2 = 19
  5. 5.Aarav has 2 crayons and gets 4 crayons more. How many crayons does Aarav have now?
  6. 6.There are 10 white balls and 3 pink balls. How many balls are there in all?
  7. 7.5 + 7 + 4 =
  8. 8.? + 1 = 3
  9. 9.2 + 8 + 1 =
  10. 10.There are 7 red beads and 10 green beads. How many beads are there in all?
  11. 11.Lakshmi has 10 flowers and gets 6 flowers more. How many flowers does Lakshmi have now?
  12. 12.Aditya has 7 shells and gets 6 shells more. How many shells does Aditya have now?
  13. 13.4 + ? = 18
  14. 14.7 + 3 + 7 =
  15. 15.7 + 1 + 6 =
  16. 16.There are 5 blue flowers and 13 green flowers. How many flowers are there in all?
  17. 17.? + 2 = 7
  18. 18.Manav has 5 kites and gets 4 kites more. How many kites does Manav have now?
  19. 19.Ananya has 8 pencils and gets 1 pencil more. How many pencils does Ananya have now?
  20. 20.? + 1 = 20
  21. 21.1 + 3 + 4 =
  22. 22.3 + 13 =
  23. 23.1 + 1 + 16 =
  24. 24.There are 3 blue balls and 10 red balls. How many balls are there in all?
  25. 25.18 + 2 =
  26. 26.There are 2 green balloons and 14 pink balloons. How many balloons are there in all?
  27. 27.Zoya has 2 laddoos and gets 11 laddoos more. How many laddoos does Zoya have now?
  28. 28.2 + 4 + 4 =
  29. 29.Pooja has 14 books and gets 4 books more. How many books does Pooja have now?
  30. 30.8 + 4 + 2 =
  31. 31.Zoya has 10 mangoes and gets 7 mangoes more. How many mangoes does Zoya have now?
  32. 32.8 + 3 + 2 =
  33. 33.Arjun has 15 pencils and gets 2 pencils more. How many pencils does Arjun have now?
  34. 34.? + 4 = 11
  35. 35.8 + 8 + 2 =
  36. 36.8 + 2 + 1 =
  37. 37.1 + 1 + 6 =
  38. 38.Meera has 10 flowers and gets 10 flowers more. How many flowers does Meera have now?
  39. 39.Sneha has 7 bananas and gets 9 bananas more. How many bananas does Sneha have now?
  40. 40.3 + 5 + 1 =

Answer key

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

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