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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 866 · 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. 1.15 + 1 =
  2. 2.There are 7 green crayons and 3 white crayons. How many crayons are there in all?
  3. 3.There are 9 green balloons and 6 pink balloons. How many balloons are there in all?
  4. 4.Tara has 12 books and gets 7 books more. How many books does Tara have now?
  5. 5.Vivaan has 4 kites and gets 2 kites more. How many kites does Vivaan have now?
  6. 6.18 + 1 =
  7. 7.5 + 6 + 9 =
  8. 8.Ishaan has 2 kites and gets 18 kites more. How many kites does Ishaan have now?
  9. 9.? + 1 = 4
  10. 10.There are 11 blue beads and 4 white beads. How many beads are there in all?
  11. 11.4 + 2 =
  12. 12.4 + 1 + 8 =
  13. 13.6 + 1 + 2 =
  14. 14.10 + ? = 17
  15. 15.There are 8 pink kites and 7 red kites. How many kites are there in all?
  16. 16.12 + 5 =
  17. 17.There are 8 red balloons and 4 green balloons. How many balloons are there in all?
  18. 18.There are 2 yellow beads and 17 green beads. How many beads are there in all?
  19. 19.There are 12 green kites and 2 blue kites. How many kites are there in all?
  20. 20.Arjun has 6 marbles and gets 6 marbles more. How many marbles does Arjun have now?
  21. 21.15 + 5 =
  22. 22.? + 2 = 6
  23. 23.6 + 11 =
  24. 24.There are 3 white balls and 17 blue balls. How many balls are there in all?
  25. 25.Ananya has 7 laddoos and gets 1 laddoo more. How many laddoos does Ananya have now?
  26. 26.There are 8 white balloons and 6 red balloons. How many balloons are there in all?
  27. 27.14 + 6 =
  28. 28.Pooja has 4 shells and gets 16 shells more. How many shells does Pooja have now?
  29. 29.There are 3 red balls and 10 yellow balls. How many balls are there in all?
  30. 30.3 + ? = 11
  31. 31.Lakshmi has 12 kites and gets 1 kite more. How many kites does Lakshmi have now?
  32. 32.Rohan has 12 crayons and gets 6 crayons more. How many crayons does Rohan have now?
  33. 33.7 + 1 + 8 =
  34. 34.19 + 1 =
  35. 35.3 + 1 =
  36. 36.16 + 3 =
  37. 37.3 + 2 =
  38. 38.1 + ? = 5
  39. 39.1 + 1 + 4 =
  40. 40.Sneha has 11 marbles and gets 2 marbles more. How many marbles does Sneha have now?

Answer key

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

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