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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 912 · 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.Sneha has 10 pencils and gets 10 pencils more. How many pencils does Sneha have now?
  2. 2.2 + 5 + 8 =
  3. 3.3 + 6 + 7 =
  4. 4.4 + ? = 8
  5. 5.3 + 4 =
  6. 6.Aarav has 4 pencils and gets 13 pencils more. How many pencils does Aarav have now?
  7. 7.There are 5 white crayons and 10 blue crayons. How many crayons are there in all?
  8. 8.There are 3 red beads and 4 blue beads. How many beads are there in all?
  9. 9.Saanvi has 13 kites and gets 7 kites more. How many kites does Saanvi have now?
  10. 10.13 + 1 =
  11. 11.4 + 5 =
  12. 12.Arjun has 9 pencils and gets 6 pencils more. How many pencils does Arjun have now?
  13. 13.6 + 3 + 2 =
  14. 14.7 + 13 =
  15. 15.2 + 2 + 3 =
  16. 16.19 + 1 =
  17. 17.8 + 1 + 10 =
  18. 18.8 + 8 + 2 =
  19. 19.2 + 2 + 9 =
  20. 20.16 + 1 =
  21. 21.There are 8 green kites and 6 red kites. How many kites are there in all?
  22. 22.3 + 16 =
  23. 23.? + 3 = 17
  24. 24.? + 8 = 17
  25. 25.11 + ? = 14
  26. 26.1 + ? = 3
  27. 27.? + 1 = 5
  28. 28.7 + 7 + 6 =
  29. 29.3 + 1 + 3 =
  30. 30.16 + 2 =
  31. 31.9 + 10 =
  32. 32.8 + 5 =
  33. 33.Isha has 6 mangoes and gets 11 mangoes more. How many mangoes does Isha have now?
  34. 34.6 + ? = 14
  35. 35.7 + 2 + 2 =
  36. 36.2 + 5 + 9 =
  37. 37.6 + 3 =
  38. 38.There are 6 green flowers and 9 pink flowers. How many flowers are there in all?
  39. 39.? + 5 = 8
  40. 40.There are 4 green balloons and 4 blue balloons. How many balloons are there in all?

Answer key

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

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