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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 543 · 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. 1.4 + 14 =
  2. 2.Ishaan has 6 pencils and gets 3 pencils more. How many pencils does Ishaan have now?
  3. 3.2 + 8 =
  4. 4.? + 1 = 5
  5. 5.There are 11 white flowers and 4 green flowers. How many flowers are there in all?
  6. 6.? + 2 = 6
  7. 7.Aarav has 2 laddoos and gets 15 laddoos more. How many laddoos does Aarav have now?
  8. 8.12 + 6 =
  9. 9.11 + ? = 20
  10. 10.13 + 4 =
  11. 11.Rohan has 3 laddoos and gets 17 laddoos more. How many laddoos does Rohan have now?
  12. 12.Riya has 6 laddoos and gets 10 laddoos more. How many laddoos does Riya have now?
  13. 13.There are 7 white kites and 3 yellow kites. How many kites are there in all?
  14. 14.Meera has 4 laddoos and gets 12 laddoos more. How many laddoos does Meera have now?
  15. 15.Rohan has 3 laddoos and gets 10 laddoos more. How many laddoos does Rohan have now?
  16. 16.? + 1 = 19
  17. 17.1 + ? = 13
  18. 18.19 + 1 =
  19. 19.1 + 17 =
  20. 20.There are 2 white beads and 16 green beads. How many beads are there in all?
  21. 21.There are 9 pink flowers and 3 red flowers. How many flowers are there in all?
  22. 22.13 + ? = 18
  23. 23.There are 10 red balloons and 3 yellow balloons. How many balloons are there in all?
  24. 24.1 + ? = 4
  25. 25.Ishaan has 2 shells and gets 9 shells more. How many shells does Ishaan have now?
  26. 26.3 + 3 =
  27. 27.Arjun has 5 flowers and gets 6 flowers more. How many flowers does Arjun have now?
  28. 28.11 + 3 =
  29. 29.6 + 5 =
  30. 30.Zoya has 15 mangoes and gets 2 mangoes more. How many mangoes does Zoya have now?
  31. 31.Arjun has 9 bananas and gets 3 bananas more. How many bananas does Arjun have now?
  32. 32.4 + 6 + 2 =
  33. 33.2 + 3 + 5 =
  34. 34.5 + 8 + 7 =
  35. 35.2 + 2 + 12 =
  36. 36.There are 7 white kites and 10 red kites. How many kites are there in all?
  37. 37.6 + 1 + 2 =
  38. 38.1 + 7 + 10 =
  39. 39.There are 5 green kites and 4 red kites. How many kites are there in all?
  40. 40.There are 11 white flowers and 3 blue flowers. How many flowers are there in all?

Answer key

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

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