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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 218 · 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.Ishaan has 12 kites and gets 5 kites more. How many kites does Ishaan have now?
  2. 2.There are 10 pink balls and 6 blue balls. How many balls are there in all?
  3. 3.There are 9 white kites and 5 red kites. How many kites are there in all?
  4. 4.There are 4 blue balloons and 12 white balloons. How many balloons are there in all?
  5. 5.There are 9 red balloons and 10 blue balloons. How many balloons are there in all?
  6. 6.16 + 4 =
  7. 7.? + 4 = 9
  8. 8.? + 6 = 17
  9. 9.? + 1 = 4
  10. 10.2 + ? = 6
  11. 11.There are 10 red balls and 3 green balls. How many balls are there in all?
  12. 12.15 + 1 =
  13. 13.There are 10 pink balls and 8 blue balls. How many balls are there in all?
  14. 14.10 + 7 =
  15. 15.Priya has 14 flowers and gets 2 flowers more. How many flowers does Priya have now?
  16. 16.Gurpreet has 8 marbles and gets 8 marbles more. How many marbles does Gurpreet have now?
  17. 17.Ishaan has 11 flowers and gets 6 flowers more. How many flowers does Ishaan have now?
  18. 18.3 + 3 + 12 =
  19. 19.? + 6 = 8
  20. 20.17 + 2 =
  21. 21.1 + 3 + 10 =
  22. 22.Sneha has 7 books and gets 4 books more. How many books does Sneha have now?
  23. 23.? + 16 = 19
  24. 24.4 + 8 =
  25. 25.4 + ? = 5
  26. 26.3 + 15 =
  27. 27.Joseph has 13 pencils and gets 5 pencils more. How many pencils does Joseph have now?
  28. 28.Karan has 7 pencils and gets 9 pencils more. How many pencils does Karan have now?
  29. 29.? + 14 = 15
  30. 30.10 + ? = 15
  31. 31.6 + 4 =
  32. 32.Pooja has 8 crayons and gets 3 crayons more. How many crayons does Pooja have now?
  33. 33.There are 8 white balls and 5 green balls. How many balls are there in all?
  34. 34.Saanvi has 5 shells and gets 1 shell more. How many shells does Saanvi have now?
  35. 35.8 + 4 =
  36. 36.Aditya has 12 books and gets 8 books more. How many books does Aditya have now?
  37. 37.15 + 5 =
  38. 38.1 + 8 + 4 =
  39. 39.4 + 9 =
  40. 40.Diya has 15 flowers and gets 2 flowers more. How many flowers does Diya have now?

Answer key

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

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