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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 446 · 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.? + 3 = 18
  2. 2.Meera has 9 balls and gets 7 balls more. How many balls does Meera have now?
  3. 3.12 + 2 =
  4. 4.? + 1 = 5
  5. 5.1 + 6 + 1 =
  6. 6.There are 2 red flowers and 9 blue flowers. How many flowers are there in all?
  7. 7.6 + 3 + 10 =
  8. 8.2 + 18 =
  9. 9.13 + 1 =
  10. 10.6 + 4 + 8 =
  11. 11.8 + 5 + 2 =
  12. 12.2 + 7 + 3 =
  13. 13.2 + 6 + 3 =
  14. 14.19 + 1 =
  15. 15.16 + 4 =
  16. 16.Kavya has 6 bananas and gets 8 bananas more. How many bananas does Kavya have now?
  17. 17.3 + 2 + 14 =
  18. 18.1 + 2 + 2 =
  19. 19.There are 7 green balls and 12 yellow balls. How many balls are there in all?
  20. 20.9 + 9 =
  21. 21.Aditya has 5 flowers and gets 5 flowers more. How many flowers does Aditya have now?
  22. 22.8 + 5 + 5 =
  23. 23.Arjun has 3 flowers and gets 5 flowers more. How many flowers does Arjun have now?
  24. 24.3 + 6 + 9 =
  25. 25.1 + 4 + 9 =
  26. 26.2 + ? = 4
  27. 27.13 + 3 =
  28. 28.7 + 8 =
  29. 29.2 + 1 + 2 =
  30. 30.There are 9 green balls and 3 blue balls. How many balls are there in all?
  31. 31.2 + ? = 8
  32. 32.? + 18 = 19
  33. 33.Sneha has 14 balloons and gets 6 balloons more. How many balloons does Sneha have now?
  34. 34.6 + 7 + 6 =
  35. 35.14 + 5 =
  36. 36.1 + 4 + 1 =
  37. 37.3 + 6 + 4 =
  38. 38.There are 4 pink balloons and 12 yellow balloons. How many balloons are there in all?
  39. 39.There are 7 pink kites and 3 white kites. How many kites are there in all?
  40. 40.4 + 5 =

Answer key

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

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