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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 675 · 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.There are 10 yellow crayons and 6 blue crayons. How many crayons are there in all?
  2. 2.There are 8 green kites and 11 blue kites. How many kites are there in all?
  3. 3.1 + ? = 13
  4. 4.11 + 5 =
  5. 5.There are 12 green flowers and 6 blue flowers. How many flowers are there in all?
  6. 6.17 + 3 =
  7. 7.2 + 6 + 2 =
  8. 8.11 + ? = 14
  9. 9.There are 2 yellow balloons and 4 green balloons. How many balloons are there in all?
  10. 10.There are 9 blue crayons and 3 red crayons. How many crayons are there in all?
  11. 11.Tara has 15 balloons and gets 2 balloons more. How many balloons does Tara have now?
  12. 12.? + 4 = 8
  13. 13.19 + 1 =
  14. 14.? + 15 = 19
  15. 15.3 + 2 =
  16. 16.1 + ? = 6
  17. 17.? + 1 = 6
  18. 18.Rohan has 2 crayons and gets 3 crayons more. How many crayons does Rohan have now?
  19. 19.There are 9 green beads and 2 red beads. How many beads are there in all?
  20. 20.Kavya has 3 balloons and gets 4 balloons more. How many balloons does Kavya have now?
  21. 21.Arjun has 14 balls and gets 2 balls more. How many balls does Arjun have now?
  22. 22.7 + 1 + 10 =
  23. 23.Ananya has 7 marbles and gets 5 marbles more. How many marbles does Ananya have now?
  24. 24.There are 6 blue kites and 5 green kites. How many kites are there in all?
  25. 25.7 + 6 + 5 =
  26. 26.12 + ? = 18
  27. 27.2 + 3 + 10 =
  28. 28.? + 1 = 9
  29. 29.3 + ? = 17
  30. 30.There are 3 white kites and 5 pink kites. How many kites are there in all?
  31. 31.2 + 11 =
  32. 32.5 + 7 + 1 =
  33. 33.10 + 2 =
  34. 34.6 + 9 =
  35. 35.Riya has 2 shells and gets 7 shells more. How many shells does Riya have now?
  36. 36.2 + 7 + 10 =
  37. 37.1 + 15 =
  38. 38.3 + 7 + 6 =
  39. 39.There are 4 white flowers and 16 green flowers. How many flowers are there in all?
  40. 40.Rahul has 8 pencils and gets 7 pencils more. How many pencils does Rahul have now?

Answer key

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

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