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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 955 · 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. 1.7 + 6 + 1 =
  2. 2.4 + 7 + 9 =
  3. 3.5 + 12 =
  4. 4.1 + ? = 17
  5. 5.14 + 6 =
  6. 6.Meera has 5 shells and gets 11 shells more. How many shells does Meera have now?
  7. 7.6 + 1 =
  8. 8.Kavya has 13 marbles and gets 1 marble more. How many marbles does Kavya have now?
  9. 9.1 + 10 =
  10. 10.Meera has 12 books and gets 5 books more. How many books does Meera have now?
  11. 11.12 + 7 =
  12. 12.8 + ? = 13
  13. 13.? + 2 = 10
  14. 14.4 + 7 + 4 =
  15. 15.There are 4 blue balloons and 4 white balloons. How many balloons are there in all?
  16. 16.6 + 2 =
  17. 17.Farhan has 13 bananas and gets 3 bananas more. How many bananas does Farhan have now?
  18. 18.There are 12 blue balls and 4 white balls. How many balls are there in all?
  19. 19.1 + 7 + 6 =
  20. 20.Ananya has 14 books and gets 6 books more. How many books does Ananya have now?
  21. 21.There are 12 white flowers and 3 pink flowers. How many flowers are there in all?
  22. 22.? + 3 = 10
  23. 23.There are 4 yellow balls and 10 pink balls. How many balls are there in all?
  24. 24.There are 5 red flowers and 9 blue flowers. How many flowers are there in all?
  25. 25.There are 5 blue crayons and 3 yellow crayons. How many crayons are there in all?
  26. 26.1 + 3 + 5 =
  27. 27.8 + 1 + 7 =
  28. 28.9 + 4 =
  29. 29.There are 8 blue balls and 2 pink balls. How many balls are there in all?
  30. 30.18 + 1 =
  31. 31.5 + ? = 17
  32. 32.3 + 8 + 9 =
  33. 33.There are 9 green balloons and 3 blue balloons. How many balloons are there in all?
  34. 34.? + 8 = 11
  35. 35.Farhan has 9 balls and gets 6 balls more. How many balls does Farhan have now?
  36. 36.12 + 8 =
  37. 37.There are 9 blue flowers and 6 green flowers. How many flowers are there in all?
  38. 38.There are 10 red beads and 10 yellow beads. How many beads are there in all?
  39. 39.5 + 2 + 7 =
  40. 40.6 + 8 + 3 =

Answer key

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

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