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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 159 · 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. 1.5 + 7 =
  2. 2.There are 7 blue crayons and 2 pink crayons. How many crayons are there in all?
  3. 3.18 + 1 =
  4. 4.18 + 2 =
  5. 5.Aditya has 5 bananas and gets 11 bananas more. How many bananas does Aditya have now?
  6. 6.There are 5 white beads and 2 blue beads. How many beads are there in all?
  7. 7.5 + ? = 18
  8. 8.4 + 3 + 4 =
  9. 9.4 + 15 =
  10. 10.2 + 4 + 8 =
  11. 11.2 + 5 =
  12. 12.There are 4 yellow crayons and 9 blue crayons. How many crayons are there in all?
  13. 13.2 + ? = 13
  14. 14.9 + 2 =
  15. 15.19 + 1 =
  16. 16.6 + 5 + 7 =
  17. 17.14 + 6 =
  18. 18.8 + ? = 15
  19. 19.17 + 1 =
  20. 20.7 + 6 + 5 =
  21. 21.There are 11 pink kites and 6 white kites. How many kites are there in all?
  22. 22.? + 9 = 14
  23. 23.There are 6 green balloons and 13 pink balloons. How many balloons are there in all?
  24. 24.? + 3 = 5
  25. 25.1 + 5 =
  26. 26.5 + 13 =
  27. 27.2 + 4 + 13 =
  28. 28.Aarav has 2 mangoes and gets 2 mangoes more. How many mangoes does Aarav have now?
  29. 29.16 + 2 =
  30. 30.5 + ? = 7
  31. 31.? + 1 = 19
  32. 32.3 + 5 =
  33. 33.There are 2 yellow kites and 2 blue kites. How many kites are there in all?
  34. 34.11 + 1 =
  35. 35.4 + 6 + 6 =
  36. 36.Rohan has 13 shells and gets 2 shells more. How many shells does Rohan have now?
  37. 37.7 + 12 =
  38. 38.13 + 1 =
  39. 39.11 + ? = 15
  40. 40.Kabir has 14 books and gets 4 books more. How many books does Kabir have now?

Answer key

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

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