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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 910 · 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.? + 7 = 8
  2. 2.Tara has 8 pencils and gets 11 pencils more. How many pencils does Tara have now?
  3. 3.Tara has 7 mangoes and gets 1 mango more. How many mangoes does Tara have now?
  4. 4.17 + 2 =
  5. 5.14 + 2 =
  6. 6.2 + ? = 11
  7. 7.2 + 1 + 16 =
  8. 8.16 + 3 =
  9. 9.8 + 11 =
  10. 10.There are 4 blue balloons and 14 white balloons. How many balloons are there in all?
  11. 11.15 + 4 =
  12. 12.12 + 2 =
  13. 13.There are 9 green crayons and 7 white crayons. How many crayons are there in all?
  14. 14.14 + 6 =
  15. 15.10 + 10 =
  16. 16.17 + 1 =
  17. 17.19 + 1 =
  18. 18.6 + 2 + 12 =
  19. 19.There are 5 pink flowers and 15 white flowers. How many flowers are there in all?
  20. 20.? + 14 = 15
  21. 21.? + 3 = 18
  22. 22.Kabir has 5 laddoos and gets 12 laddoos more. How many laddoos does Kabir have now?
  23. 23.Aarav has 12 flowers and gets 7 flowers more. How many flowers does Aarav have now?
  24. 24.Saanvi has 3 kites and gets 13 kites more. How many kites does Saanvi have now?
  25. 25.1 + 4 =
  26. 26.Isha has 3 laddoos and gets 6 laddoos more. How many laddoos does Isha have now?
  27. 27.5 + 1 + 7 =
  28. 28.Farhan has 2 flowers and gets 8 flowers more. How many flowers does Farhan have now?
  29. 29.12 + 7 =
  30. 30.5 + 7 =
  31. 31.2 + 8 + 2 =
  32. 32.7 + 6 + 1 =
  33. 33.? + 7 = 11
  34. 34.Priya has 12 shells and gets 8 shells more. How many shells does Priya have now?
  35. 35.There are 2 green balloons and 3 blue balloons. How many balloons are there in all?
  36. 36.There are 7 yellow kites and 13 pink kites. How many kites are there in all?
  37. 37.7 + 2 + 2 =
  38. 38.Arjun has 6 books and gets 14 books more. How many books does Arjun have now?
  39. 39.There are 12 red beads and 2 pink beads. How many beads are there in all?
  40. 40.1 + 8 + 9 =

Answer key

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

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