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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 922 · 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. 1.1 + 7 + 6 =
  2. 2.3 + 4 + 3 =
  3. 3.There are 7 green crayons and 4 red crayons. How many crayons are there in all?
  4. 4.Saanvi has 12 books and gets 2 books more. How many books does Saanvi have now?
  5. 5.There are 9 blue beads and 6 white beads. How many beads are there in all?
  6. 6.5 + 3 =
  7. 7.5 + ? = 9
  8. 8.8 + 6 + 1 =
  9. 9.There are 3 green kites and 8 white kites. How many kites are there in all?
  10. 10.Ishaan has 9 mangoes and gets 10 mangoes more. How many mangoes does Ishaan have now?
  11. 11.5 + 6 + 5 =
  12. 12.6 + 9 =
  13. 13.15 + 2 =
  14. 14.? + 1 = 3
  15. 15.1 + 6 + 4 =
  16. 16.There are 8 yellow balls and 2 green balls. How many balls are there in all?
  17. 17.1 + 14 =
  18. 18.There are 4 green flowers and 15 white flowers. How many flowers are there in all?
  19. 19.Arjun has 9 laddoos and gets 5 laddoos more. How many laddoos does Arjun have now?
  20. 20.3 + 6 + 2 =
  21. 21.Zoya has 8 kites and gets 1 kite more. How many kites does Zoya have now?
  22. 22.There are 9 blue flowers and 11 pink flowers. How many flowers are there in all?
  23. 23.7 + 8 + 2 =
  24. 24.Farhan has 7 books and gets 7 books more. How many books does Farhan have now?
  25. 25.There are 8 blue kites and 3 white kites. How many kites are there in all?
  26. 26.9 + 2 =
  27. 27.5 + ? = 17
  28. 28.Rohan has 13 pencils and gets 6 pencils more. How many pencils does Rohan have now?
  29. 29.8 + 7 + 2 =
  30. 30.4 + ? = 10
  31. 31.18 + 2 =
  32. 32.2 + ? = 8
  33. 33.7 + 13 =
  34. 34.There are 7 blue kites and 7 red kites. How many kites are there in all?
  35. 35.There are 3 green balls and 2 blue balls. How many balls are there in all?
  36. 36.There are 3 green crayons and 17 red crayons. How many crayons are there in all?
  37. 37.8 + 8 + 4 =
  38. 38.2 + 1 + 10 =
  39. 39.Pooja has 12 bananas and gets 5 bananas more. How many bananas does Pooja have now?
  40. 40.7 + ? = 20

Answer key

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

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