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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 148 · 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. 1.17 + 2 =
  2. 2.7 + 11 =
  3. 3.? + 12 = 14
  4. 4.There are 12 red balls and 2 yellow balls. How many balls are there in all?
  5. 5.Rahul has 14 flowers and gets 6 flowers more. How many flowers does Rahul have now?
  6. 6.12 + 6 =
  7. 7.There are 12 blue beads and 7 red beads. How many beads are there in all?
  8. 8.? + 9 = 13
  9. 9.? + 14 = 16
  10. 10.8 + 5 =
  11. 11.11 + 9 =
  12. 12.There are 10 white crayons and 5 yellow crayons. How many crayons are there in all?
  13. 13.1 + 1 + 18 =
  14. 14.There are 4 blue balloons and 11 green balloons. How many balloons are there in all?
  15. 15.Gurpreet has 13 pencils and gets 2 pencils more. How many pencils does Gurpreet have now?
  16. 16.Karan has 2 balloons and gets 12 balloons more. How many balloons does Karan have now?
  17. 17.There are 5 green crayons and 12 blue crayons. How many crayons are there in all?
  18. 18.There are 10 pink flowers and 9 blue flowers. How many flowers are there in all?
  19. 19.Tara has 2 books and gets 15 books more. How many books does Tara have now?
  20. 20.10 + 1 =
  21. 21.9 + 3 =
  22. 22.1 + 8 + 2 =
  23. 23.Kabir has 2 kites and gets 9 kites more. How many kites does Kabir have now?
  24. 24.1 + 2 =
  25. 25.? + 11 = 14
  26. 26.There are 5 white crayons and 9 green crayons. How many crayons are there in all?
  27. 27.There are 2 blue flowers and 6 green flowers. How many flowers are there in all?
  28. 28.There are 10 green crayons and 3 white crayons. How many crayons are there in all?
  29. 29.? + 7 = 16
  30. 30.15 + 3 =
  31. 31.2 + 8 + 9 =
  32. 32.4 + 6 + 10 =
  33. 33.1 + 8 + 7 =
  34. 34.11 + ? = 18
  35. 35.? + 2 = 7
  36. 36.? + 6 = 7
  37. 37.Rohan has 11 balls and gets 3 balls more. How many balls does Rohan have now?
  38. 38.There are 12 blue kites and 7 red kites. How many kites are there in all?
  39. 39.19 + ? = 20
  40. 40.11 + 4 =

Answer key

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

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