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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 585 · 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 = 11
  2. 2.? + 4 = 13
  3. 3.Sneha has 11 shells and gets 1 shell more. How many shells does Sneha have now?
  4. 4.9 + 8 =
  5. 5.15 + 1 =
  6. 6.? + 14 = 19
  7. 7.1 + ? = 7
  8. 8.There are 7 yellow kites and 10 pink kites. How many kites are there in all?
  9. 9.Aarav has 10 crayons and gets 9 crayons more. How many crayons does Aarav have now?
  10. 10.6 + 4 + 3 =
  11. 11.3 + ? = 7
  12. 12.13 + ? = 16
  13. 13.? + 5 = 7
  14. 14.Aarav has 3 bananas and gets 7 bananas more. How many bananas does Aarav have now?
  15. 15.? + 2 = 9
  16. 16.1 + 1 + 2 =
  17. 17.2 + ? = 5
  18. 18.4 + ? = 14
  19. 19.1 + 1 =
  20. 20.There are 9 blue beads and 3 yellow beads. How many beads are there in all?
  21. 21.There are 11 red balls and 2 blue balls. How many balls are there in all?
  22. 22.4 + 4 + 3 =
  23. 23.10 + 4 =
  24. 24.There are 12 blue balls and 7 pink balls. How many balls are there in all?
  25. 25.? + 8 = 15
  26. 26.11 + 1 =
  27. 27.Rahul has 8 flowers and gets 10 flowers more. How many flowers does Rahul have now?
  28. 28.9 + 7 =
  29. 29.1 + 11 =
  30. 30.There are 6 blue flowers and 13 yellow flowers. How many flowers are there in all?
  31. 31.9 + 4 =
  32. 32.Ananya has 14 flowers and gets 4 flowers more. How many flowers does Ananya have now?
  33. 33.4 + 1 + 3 =
  34. 34.16 + 1 =
  35. 35.? + 3 = 8
  36. 36.1 + 6 + 10 =
  37. 37.7 + 1 =
  38. 38.1 + ? = 10
  39. 39.Diya has 4 balloons and gets 6 balloons more. How many balloons does Diya have now?
  40. 40.6 + 3 + 7 =

Answer key

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

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