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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 280 · 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.Ishaan has 15 laddoos and gets 2 laddoos more. How many laddoos does Ishaan have now?
  2. 2.8 + 5 + 6 =
  3. 3.1 + 7 + 4 =
  4. 4.10 + 1 =
  5. 5.There are 4 red kites and 12 green kites. How many kites are there in all?
  6. 6.7 + 4 =
  7. 7.Lakshmi has 7 balloons and gets 12 balloons more. How many balloons does Lakshmi have now?
  8. 8.2 + 2 + 12 =
  9. 9.Nisha has 8 flowers and gets 7 flowers more. How many flowers does Nisha have now?
  10. 10.8 + ? = 12
  11. 11.9 + ? = 12
  12. 12.? + 6 = 11
  13. 13.9 + ? = 13
  14. 14.Ananya has 3 laddoos and gets 8 laddoos more. How many laddoos does Ananya have now?
  15. 15.3 + 3 + 8 =
  16. 16.? + 2 = 5
  17. 17.There are 2 yellow flowers and 2 pink flowers. How many flowers are there in all?
  18. 18.Tara has 3 books and gets 7 books more. How many books does Tara have now?
  19. 19.4 + 4 + 7 =
  20. 20.Aditya has 9 bananas and gets 2 bananas more. How many bananas does Aditya have now?
  21. 21.There are 7 green flowers and 9 white flowers. How many flowers are there in all?
  22. 22.? + 4 = 20
  23. 23.3 + 6 + 8 =
  24. 24.2 + ? = 13
  25. 25.13 + 6 =
  26. 26.6 + ? = 7
  27. 27.? + 14 = 17
  28. 28.? + 7 = 17
  29. 29.Rahul has 4 balls and gets 12 balls more. How many balls does Rahul have now?
  30. 30.4 + 5 =
  31. 31.2 + 15 =
  32. 32.2 + ? = 5
  33. 33.6 + 10 =
  34. 34.3 + 3 + 10 =
  35. 35.1 + 8 + 1 =
  36. 36.Tara has 2 marbles and gets 2 marbles more. How many marbles does Tara have now?
  37. 37.7 + 12 =
  38. 38.8 + 6 + 3 =
  39. 39.Diya has 7 balloons and gets 3 balloons more. How many balloons does Diya have now?
  40. 40.? + 4 = 12

Answer key

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

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