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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 797 · 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.Rahul has 3 crayons and gets 9 crayons more. How many crayons does Rahul have now?
  2. 2.3 + 6 =
  3. 3.Ananya has 15 pencils and gets 5 pencils more. How many pencils does Ananya have now?
  4. 4.? + 6 = 19
  5. 5.18 + 1 =
  6. 6.5 + 2 + 8 =
  7. 7.There are 8 red balls and 5 white balls. How many balls are there in all?
  8. 8.There are 3 green kites and 15 red kites. How many kites are there in all?
  9. 9.There are 7 white kites and 3 blue kites. How many kites are there in all?
  10. 10.8 + 5 + 5 =
  11. 11.7 + 1 + 4 =
  12. 12.6 + 6 + 1 =
  13. 13.? + 1 = 3
  14. 14.? + 15 = 17
  15. 15.? + 3 = 17
  16. 16.3 + 7 + 5 =
  17. 17.? + 14 = 16
  18. 18.1 + ? = 3
  19. 19.17 + 3 =
  20. 20.4 + 4 =
  21. 21.6 + 12 =
  22. 22.6 + 7 =
  23. 23.16 + 2 =
  24. 24.7 + 6 + 2 =
  25. 25.7 + 7 + 1 =
  26. 26.Kavya has 15 books and gets 5 books more. How many books does Kavya have now?
  27. 27.Sneha has 10 flowers and gets 1 flower more. How many flowers does Sneha have now?
  28. 28.15 + ? = 17
  29. 29.Diya has 10 mangoes and gets 9 mangoes more. How many mangoes does Diya have now?
  30. 30.11 + 1 =
  31. 31.8 + 4 + 8 =
  32. 32.3 + 6 + 3 =
  33. 33.Riya has 11 bananas and gets 7 bananas more. How many bananas does Riya have now?
  34. 34.? + 1 = 4
  35. 35.? + 1 = 14
  36. 36.Meera has 12 mangoes and gets 6 mangoes more. How many mangoes does Meera have now?
  37. 37.Ananya has 3 crayons and gets 9 crayons more. How many crayons does Ananya have now?
  38. 38.8 + 3 + 5 =
  39. 39.Dev has 3 laddoos and gets 11 laddoos more. How many laddoos does Dev have now?
  40. 40.8 + ? = 19

Answer key

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

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