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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 325 · 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. 1.11 + 5 =
  2. 2.7 + 6 + 5 =
  3. 3.There are 2 red flowers and 9 white flowers. How many flowers are there in all?
  4. 4.There are 2 pink balloons and 13 blue balloons. How many balloons are there in all?
  5. 5.8 + 7 =
  6. 6.5 + 7 =
  7. 7.? + 2 = 8
  8. 8.1 + ? = 19
  9. 9.3 + 15 =
  10. 10.? + 9 = 11
  11. 11.19 + 1 =
  12. 12.Riya has 7 shells and gets 10 shells more. How many shells does Riya have now?
  13. 13.? + 4 = 5
  14. 14.? + 1 = 4
  15. 15.Rahul has 3 books and gets 7 books more. How many books does Rahul have now?
  16. 16.3 + 4 + 6 =
  17. 17.Sneha has 6 flowers and gets 8 flowers more. How many flowers does Sneha have now?
  18. 18.18 + 2 =
  19. 19.There are 2 red kites and 9 blue kites. How many kites are there in all?
  20. 20.There are 6 green kites and 2 red kites. How many kites are there in all?
  21. 21.13 + ? = 19
  22. 22.4 + ? = 7
  23. 23.5 + 3 + 7 =
  24. 24.1 + ? = 20
  25. 25.There are 7 red flowers and 12 blue flowers. How many flowers are there in all?
  26. 26.1 + 12 =
  27. 27.4 + 4 + 5 =
  28. 28.12 + 5 =
  29. 29.11 + ? = 14
  30. 30.1 + 4 + 4 =
  31. 31.There are 3 pink kites and 10 green kites. How many kites are there in all?
  32. 32.? + 1 = 14
  33. 33.18 + 1 =
  34. 34.1 + 3 =
  35. 35.Kavya has 15 flowers and gets 2 flowers more. How many flowers does Kavya have now?
  36. 36.Ananya has 8 pencils and gets 5 pencils more. How many pencils does Ananya have now?
  37. 37.? + 7 = 14
  38. 38.1 + 1 + 4 =
  39. 39.6 + 6 =
  40. 40.? + 13 = 16

Answer key

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

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