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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 627 · 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. 1.9 + 4 =
  2. 2.Rohan has 11 kites and gets 8 kites more. How many kites does Rohan have now?
  3. 3.15 + 5 =
  4. 4.11 + 9 =
  5. 5.Kavya has 3 balloons and gets 7 balloons more. How many balloons does Kavya have now?
  6. 6.17 + 1 =
  7. 7.Ishaan has 12 kites and gets 2 kites more. How many kites does Ishaan have now?
  8. 8.4 + 13 =
  9. 9.5 + 6 =
  10. 10.9 + 11 =
  11. 11.2 + 2 + 3 =
  12. 12.? + 1 = 18
  13. 13.4 + ? = 10
  14. 14.9 + ? = 19
  15. 15.Sneha has 12 balloons and gets 7 balloons more. How many balloons does Sneha have now?
  16. 16.There are 5 blue flowers and 11 pink flowers. How many flowers are there in all?
  17. 17.There are 3 blue balloons and 4 white balloons. How many balloons are there in all?
  18. 18.12 + ? = 20
  19. 19.Zoya has 9 laddoos and gets 11 laddoos more. How many laddoos does Zoya have now?
  20. 20.Rahul has 10 flowers and gets 8 flowers more. How many flowers does Rahul have now?
  21. 21.There are 4 yellow kites and 12 green kites. How many kites are there in all?
  22. 22.5 + 7 + 2 =
  23. 23.There are 7 red flowers and 2 pink flowers. How many flowers are there in all?
  24. 24.There are 11 red crayons and 4 blue crayons. How many crayons are there in all?
  25. 25.15 + 1 =
  26. 26.2 + 1 =
  27. 27.2 + 10 =
  28. 28.8 + 7 + 5 =
  29. 29.8 + 5 =
  30. 30.8 + 1 + 8 =
  31. 31.There are 6 green crayons and 7 red crayons. How many crayons are there in all?
  32. 32.Kabir has 13 books and gets 5 books more. How many books does Kabir have now?
  33. 33.? + 13 = 16
  34. 34.Sneha has 2 shells and gets 18 shells more. How many shells does Sneha have now?
  35. 35.4 + 3 + 4 =
  36. 36.3 + 8 + 7 =
  37. 37.Rahul has 2 balls and gets 3 balls more. How many balls does Rahul have now?
  38. 38.2 + ? = 3
  39. 39.4 + 3 + 7 =
  40. 40.Diya has 2 crayons and gets 1 crayon more. How many crayons does Diya have now?

Answer key

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

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