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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 893 · 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. 1.6 + ? = 10
  2. 2.5 + 1 =
  3. 3.7 + 3 + 7 =
  4. 4.2 + 7 + 11 =
  5. 5.2 + ? = 7
  6. 6.5 + 5 + 8 =
  7. 7.Aarav has 3 mangoes and gets 10 mangoes more. How many mangoes does Aarav have now?
  8. 8.1 + 19 =
  9. 9.There are 11 green beads and 3 blue beads. How many beads are there in all?
  10. 10.3 + 5 =
  11. 11.Rahul has 4 crayons and gets 13 crayons more. How many crayons does Rahul have now?
  12. 12.Rohan has 12 books and gets 8 books more. How many books does Rohan have now?
  13. 13.There are 3 white balls and 2 green balls. How many balls are there in all?
  14. 14.4 + 7 + 4 =
  15. 15.Isha has 13 flowers and gets 5 flowers more. How many flowers does Isha have now?
  16. 16.? + 9 = 12
  17. 17.3 + 4 =
  18. 18.4 + 3 + 6 =
  19. 19.There are 8 pink flowers and 2 green flowers. How many flowers are there in all?
  20. 20.There are 4 white kites and 9 yellow kites. How many kites are there in all?
  21. 21.Arjun has 7 crayons and gets 3 crayons more. How many crayons does Arjun have now?
  22. 22.1 + 5 =
  23. 23.There are 8 yellow flowers and 6 blue flowers. How many flowers are there in all?
  24. 24.3 + 6 + 5 =
  25. 25.16 + ? = 18
  26. 26.Ishaan has 4 balls and gets 7 balls more. How many balls does Ishaan have now?
  27. 27.3 + 11 =
  28. 28.8 + ? = 20
  29. 29.7 + 3 =
  30. 30.Ananya has 9 kites and gets 6 kites more. How many kites does Ananya have now?
  31. 31.6 + 2 + 5 =
  32. 32.There are 11 red crayons and 5 green crayons. How many crayons are there in all?
  33. 33.There are 6 blue beads and 6 red beads. How many beads are there in all?
  34. 34.1 + ? = 15
  35. 35.5 + ? = 7
  36. 36.17 + 1 =
  37. 37.Tara has 2 laddoos and gets 9 laddoos more. How many laddoos does Tara have now?
  38. 38.3 + 1 + 4 =
  39. 39.1 + 3 + 14 =
  40. 40.Ananya has 15 books and gets 3 books more. How many books does Ananya have now?

Answer key

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

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