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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 717 · 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. 1.4 + 8 + 1 =
  2. 2.5 + 7 + 6 =
  3. 3.There are 8 pink balls and 12 white balls. How many balls are there in all?
  4. 4.2 + ? = 3
  5. 5.6 + 3 + 1 =
  6. 6.Pooja has 12 balls and gets 1 ball more. How many balls does Pooja have now?
  7. 7.There are 2 blue flowers and 10 pink flowers. How many flowers are there in all?
  8. 8.3 + 4 =
  9. 9.3 + 2 + 8 =
  10. 10.Pooja has 8 pencils and gets 7 pencils more. How many pencils does Pooja have now?
  11. 11.There are 7 green balloons and 11 blue balloons. How many balloons are there in all?
  12. 12.? + 6 = 20
  13. 13.2 + 13 =
  14. 14.Arjun has 11 balloons and gets 2 balloons more. How many balloons does Arjun have now?
  15. 15.There are 9 white kites and 2 red kites. How many kites are there in all?
  16. 16.10 + 8 =
  17. 17.Arjun has 6 laddoos and gets 14 laddoos more. How many laddoos does Arjun have now?
  18. 18.? + 2 = 12
  19. 19.2 + 5 + 3 =
  20. 20.2 + 6 + 6 =
  21. 21.6 + 1 + 10 =
  22. 22.There are 7 green kites and 3 pink kites. How many kites are there in all?
  23. 23.There are 3 pink balloons and 4 green balloons. How many balloons are there in all?
  24. 24.Karan has 8 books and gets 7 books more. How many books does Karan have now?
  25. 25.There are 3 red balloons and 5 white balloons. How many balloons are there in all?
  26. 26.Tara has 7 crayons and gets 7 crayons more. How many crayons does Tara have now?
  27. 27.5 + 5 =
  28. 28.? + 1 = 3
  29. 29.Lakshmi has 8 crayons and gets 2 crayons more. How many crayons does Lakshmi have now?
  30. 30.Farhan has 7 laddoos and gets 2 laddoos more. How many laddoos does Farhan have now?
  31. 31.11 + ? = 16
  32. 32.Ishaan has 9 mangoes and gets 11 mangoes more. How many mangoes does Ishaan have now?
  33. 33.There are 6 yellow balloons and 13 white balloons. How many balloons are there in all?
  34. 34.8 + 6 + 2 =
  35. 35.? + 1 = 6
  36. 36.16 + 1 =
  37. 37.Zoya has 15 books and gets 4 books more. How many books does Zoya have now?
  38. 38.There are 2 red crayons and 3 blue crayons. How many crayons are there in all?
  39. 39.3 + 5 + 4 =
  40. 40.10 + 9 =

Answer key

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

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