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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 311 · 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.There are 2 green flowers and 8 red flowers. How many flowers are there in all?
  2. 2.3 + ? = 4
  3. 3.Diya has 13 shells and gets 6 shells more. How many shells does Diya have now?
  4. 4.4 + 4 + 11 =
  5. 5.6 + 5 + 1 =
  6. 6.4 + 3 =
  7. 7.1 + 5 + 5 =
  8. 8.1 + 18 =
  9. 9.5 + 5 + 7 =
  10. 10.8 + ? = 10
  11. 11.17 + 1 =
  12. 12.7 + 2 + 5 =
  13. 13.There are 7 green flowers and 5 red flowers. How many flowers are there in all?
  14. 14.? + 10 = 13
  15. 15.3 + 3 + 12 =
  16. 16.1 + 7 + 7 =
  17. 17.? + 5 = 9
  18. 18.2 + ? = 11
  19. 19.2 + 4 + 7 =
  20. 20.There are 3 blue kites and 2 yellow kites. How many kites are there in all?
  21. 21.5 + 2 =
  22. 22.12 + 3 =
  23. 23.11 + ? = 16
  24. 24.Lakshmi has 2 flowers and gets 16 flowers more. How many flowers does Lakshmi have now?
  25. 25.3 + 4 + 2 =
  26. 26.4 + 1 + 11 =
  27. 27.? + 8 = 13
  28. 28.3 + 1 =
  29. 29.4 + 8 + 4 =
  30. 30.Tara has 8 shells and gets 6 shells more. How many shells does Tara have now?
  31. 31.There are 4 pink balloons and 4 white balloons. How many balloons are there in all?
  32. 32.There are 4 blue crayons and 4 pink crayons. How many crayons are there in all?
  33. 33.15 + 2 =
  34. 34.5 + 3 =
  35. 35.Lakshmi has 2 crayons and gets 15 crayons more. How many crayons does Lakshmi have now?
  36. 36.? + 3 = 10
  37. 37.There are 7 red balloons and 13 white balloons. How many balloons are there in all?
  38. 38.3 + 2 =
  39. 39.Priya has 12 laddoos and gets 7 laddoos more. How many laddoos does Priya have now?
  40. 40.11 + 7 =

Answer key

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

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