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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 616 · 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 + 2 + 3 =
  2. 2.Zoya has 9 kites and gets 6 kites more. How many kites does Zoya have now?
  3. 3.15 + 1 =
  4. 4.Riya has 4 marbles and gets 12 marbles more. How many marbles does Riya have now?
  5. 5.? + 2 = 4
  6. 6.11 + 3 =
  7. 7.There are 4 blue beads and 4 pink beads. How many beads are there in all?
  8. 8.Ananya has 15 books and gets 3 books more. How many books does Ananya have now?
  9. 9.Aditya has 7 shells and gets 1 shell more. How many shells does Aditya have now?
  10. 10.6 + 1 + 11 =
  11. 11.3 + 7 + 9 =
  12. 12.12 + 8 =
  13. 13.3 + 8 + 4 =
  14. 14.Tara has 13 marbles and gets 5 marbles more. How many marbles does Tara have now?
  15. 15.There are 8 green flowers and 5 red flowers. How many flowers are there in all?
  16. 16.Diya has 13 kites and gets 7 kites more. How many kites does Diya have now?
  17. 17.There are 11 red flowers and 9 white flowers. How many flowers are there in all?
  18. 18.Aarav has 4 mangoes and gets 15 mangoes more. How many mangoes does Aarav have now?
  19. 19.4 + 8 + 8 =
  20. 20.5 + 2 =
  21. 21.2 + ? = 4
  22. 22.7 + 2 + 9 =
  23. 23.6 + 9 =
  24. 24.18 + 1 =
  25. 25.6 + 5 =
  26. 26.8 + 1 =
  27. 27.7 + 13 =
  28. 28.4 + 12 =
  29. 29.Lakshmi has 15 pencils and gets 5 pencils more. How many pencils does Lakshmi have now?
  30. 30.7 + 6 =
  31. 31.? + 7 = 14
  32. 32.2 + ? = 8
  33. 33.11 + ? = 14
  34. 34.There are 9 green beads and 2 pink beads. How many beads are there in all?
  35. 35.8 + 3 + 7 =
  36. 36.? + 3 = 18
  37. 37.2 + 7 + 10 =
  38. 38.1 + 2 + 11 =
  39. 39.3 + 4 + 8 =
  40. 40.There are 11 green kites and 4 yellow kites. How many kites are there in all?

Answer key

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

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