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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 121 · 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 yellow kites and 4 green kites. How many kites are there in all?
  2. 2.There are 4 green balloons and 9 pink balloons. How many balloons are there in all?
  3. 3.Manav has 3 balls and gets 16 balls more. How many balls does Manav have now?
  4. 4.Saanvi has 3 pencils and gets 2 pencils more. How many pencils does Saanvi have now?
  5. 5.3 + 2 =
  6. 6.There are 5 red crayons and 12 yellow crayons. How many crayons are there in all?
  7. 7.Nisha has 8 pencils and gets 9 pencils more. How many pencils does Nisha have now?
  8. 8.Tara has 3 balloons and gets 15 balloons more. How many balloons does Tara have now?
  9. 9.8 + 2 =
  10. 10.17 + 1 =
  11. 11.Kabir has 3 pencils and gets 17 pencils more. How many pencils does Kabir have now?
  12. 12.4 + ? = 5
  13. 13.8 + 7 + 3 =
  14. 14.Aditya has 2 books and gets 15 books more. How many books does Aditya have now?
  15. 15.There are 5 green balls and 11 white balls. How many balls are there in all?
  16. 16.Pooja has 7 crayons and gets 6 crayons more. How many crayons does Pooja have now?
  17. 17.2 + ? = 3
  18. 18.8 + 5 + 5 =
  19. 19.13 + 1 =
  20. 20.3 + ? = 7
  21. 21.Sneha has 9 balloons and gets 4 balloons more. How many balloons does Sneha have now?
  22. 22.3 + 17 =
  23. 23.There are 2 blue balls and 8 green balls. How many balls are there in all?
  24. 24.There are 4 blue kites and 7 green kites. How many kites are there in all?
  25. 25.? + 11 = 15
  26. 26.12 + 2 =
  27. 27.8 + 4 =
  28. 28.There are 10 red flowers and 6 blue flowers. How many flowers are there in all?
  29. 29.There are 3 green balloons and 5 blue balloons. How many balloons are there in all?
  30. 30.? + 6 = 13
  31. 31.3 + 6 + 9 =
  32. 32.3 + 9 =
  33. 33.3 + ? = 4
  34. 34.9 + ? = 18
  35. 35.Aarav has 13 marbles and gets 3 marbles more. How many marbles does Aarav have now?
  36. 36.There are 2 pink beads and 2 red beads. How many beads are there in all?
  37. 37.4 + 5 =
  38. 38.There are 10 red beads and 4 white beads. How many beads are there in all?
  39. 39.6 + 3 + 9 =
  40. 40.5 + 7 + 2 =

Answer key

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

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