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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 958 · 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 + 8 =
  2. 2.10 + ? = 12
  3. 3.Saanvi has 9 flowers and gets 3 flowers more. How many flowers does Saanvi have now?
  4. 4.There are 9 red balls and 5 blue balls. How many balls are there in all?
  5. 5.13 + ? = 16
  6. 6.6 + 4 + 9 =
  7. 7.? + 2 = 5
  8. 8.There are 2 blue balls and 3 green balls. How many balls are there in all?
  9. 9.There are 11 red kites and 3 pink kites. How many kites are there in all?
  10. 10.3 + 6 + 4 =
  11. 11.Kabir has 2 bananas and gets 14 bananas more. How many bananas does Kabir have now?
  12. 12.Kabir has 10 marbles and gets 2 marbles more. How many marbles does Kabir have now?
  13. 13.There are 3 red balloons and 14 pink balloons. How many balloons are there in all?
  14. 14.Karan has 11 balloons and gets 2 balloons more. How many balloons does Karan have now?
  15. 15.18 + 1 =
  16. 16.13 + ? = 19
  17. 17.There are 3 white flowers and 10 pink flowers. How many flowers are there in all?
  18. 18.There are 4 pink balloons and 6 white balloons. How many balloons are there in all?
  19. 19.? + 16 = 19
  20. 20.5 + 9 =
  21. 21.2 + 15 =
  22. 22.17 + 1 =
  23. 23.Ananya has 9 marbles and gets 5 marbles more. How many marbles does Ananya have now?
  24. 24.4 + 2 + 4 =
  25. 25.? + 11 = 13
  26. 26.Ananya has 15 mangoes and gets 2 mangoes more. How many mangoes does Ananya have now?
  27. 27.3 + 5 + 1 =
  28. 28.5 + 1 =
  29. 29.There are 8 red crayons and 7 pink crayons. How many crayons are there in all?
  30. 30.8 + 6 + 4 =
  31. 31.3 + ? = 10
  32. 32.There are 9 red kites and 8 green kites. How many kites are there in all?
  33. 33.Sneha has 9 pencils and gets 1 pencil more. How many pencils does Sneha have now?
  34. 34.? + 4 = 16
  35. 35.15 + 4 =
  36. 36.19 + 1 =
  37. 37.There are 6 green balloons and 8 red balloons. How many balloons are there in all?
  38. 38.There are 5 pink kites and 4 yellow kites. How many kites are there in all?
  39. 39.5 + 15 =
  40. 40.1 + 1 =

Answer key

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

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