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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 605 · 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.Priya has 11 flowers and gets 1 flower more. How many flowers does Priya have now?
  2. 2.8 + 5 + 2 =
  3. 3.10 + 7 =
  4. 4.There are 2 white kites and 12 red kites. How many kites are there in all?
  5. 5.4 + 2 + 6 =
  6. 6.4 + 7 + 1 =
  7. 7.Ananya has 14 shells and gets 5 shells more. How many shells does Ananya have now?
  8. 8.Kabir has 8 marbles and gets 6 marbles more. How many marbles does Kabir have now?
  9. 9.1 + ? = 13
  10. 10.5 + 4 =
  11. 11.3 + 3 =
  12. 12.1 + 7 + 3 =
  13. 13.11 + 5 =
  14. 14.4 + 1 =
  15. 15.8 + 4 + 4 =
  16. 16.? + 3 = 11
  17. 17.1 + ? = 4
  18. 18.? + 3 = 19
  19. 19.5 + 3 + 6 =
  20. 20.? + 9 = 19
  21. 21.5 + 4 + 2 =
  22. 22.6 + 3 + 8 =
  23. 23.There are 8 red beads and 2 blue beads. How many beads are there in all?
  24. 24.13 + 7 =
  25. 25.8 + 2 + 10 =
  26. 26.There are 10 white kites and 3 green kites. How many kites are there in all?
  27. 27.There are 5 green balloons and 2 white balloons. How many balloons are there in all?
  28. 28.6 + ? = 7
  29. 29.11 + 7 =
  30. 30.Ananya has 4 marbles and gets 2 marbles more. How many marbles does Ananya have now?
  31. 31.Aarav has 12 mangoes and gets 6 mangoes more. How many mangoes does Aarav have now?
  32. 32.2 + ? = 7
  33. 33.Rohan has 2 bananas and gets 18 bananas more. How many bananas does Rohan have now?
  34. 34.Rahul has 11 shells and gets 3 shells more. How many shells does Rahul have now?
  35. 35.7 + 6 + 4 =
  36. 36.3 + 2 + 4 =
  37. 37.There are 4 blue kites and 13 white kites. How many kites are there in all?
  38. 38.6 + 7 =
  39. 39.There are 5 red balloons and 9 blue balloons. How many balloons are there in all?
  40. 40.4 + 4 + 9 =

Answer key

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

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