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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 186 · 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.There are 9 red flowers and 10 blue flowers. How many flowers are there in all?
  2. 2.There are 5 white flowers and 7 green flowers. How many flowers are there in all?
  3. 3.14 + 5 =
  4. 4.Farhan has 11 pencils and gets 8 pencils more. How many pencils does Farhan have now?
  5. 5.2 + 1 + 15 =
  6. 6.3 + ? = 4
  7. 7.3 + ? = 6
  8. 8.19 + 1 =
  9. 9.There are 5 green beads and 9 yellow beads. How many beads are there in all?
  10. 10.2 + 16 =
  11. 11.There are 3 green flowers and 6 red flowers. How many flowers are there in all?
  12. 12.There are 2 yellow flowers and 16 pink flowers. How many flowers are there in all?
  13. 13.6 + 6 + 8 =
  14. 14.1 + ? = 8
  15. 15.Rohan has 3 flowers and gets 10 flowers more. How many flowers does Rohan have now?
  16. 16.1 + 4 + 14 =
  17. 17.? + 12 = 20
  18. 18.2 + 6 + 11 =
  19. 19.6 + 8 + 2 =
  20. 20.3 + 10 =
  21. 21.1 + 12 =
  22. 22.Aarav has 2 laddoos and gets 9 laddoos more. How many laddoos does Aarav have now?
  23. 23.Aarav has 13 flowers and gets 2 flowers more. How many flowers does Aarav have now?
  24. 24.4 + 16 =
  25. 25.2 + 7 + 4 =
  26. 26.There are 5 blue beads and 7 yellow beads. How many beads are there in all?
  27. 27.Pooja has 12 mangoes and gets 1 mango more. How many mangoes does Pooja have now?
  28. 28.Tara has 13 shells and gets 1 shell more. How many shells does Tara have now?
  29. 29.? + 11 = 19
  30. 30.There are 6 pink crayons and 3 white crayons. How many crayons are there in all?
  31. 31.5 + ? = 10
  32. 32.4 + 4 + 7 =
  33. 33.2 + 8 + 9 =
  34. 34.3 + 16 =
  35. 35.There are 2 red balls and 2 green balls. How many balls are there in all?
  36. 36.12 + ? = 18
  37. 37.There are 7 pink kites and 12 yellow kites. How many kites are there in all?
  38. 38.2 + 4 + 11 =
  39. 39.Rahul has 2 marbles and gets 18 marbles more. How many marbles does Rahul have now?
  40. 40.18 + 1 =

Answer key

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

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