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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 110 · 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. 1.13 + 7 =
  2. 2.Diya has 4 books and gets 1 book more. How many books does Diya have now?
  3. 3.1 + ? = 8
  4. 4.1 + 5 + 6 =
  5. 5.8 + 1 + 2 =
  6. 6.6 + 2 + 2 =
  7. 7.Ishaan has 15 laddoos and gets 1 laddoo more. How many laddoos does Ishaan have now?
  8. 8.14 + 1 =
  9. 9.Nisha has 13 kites and gets 3 kites more. How many kites does Nisha have now?
  10. 10.There are 10 white crayons and 3 pink crayons. How many crayons are there in all?
  11. 11.? + 10 = 13
  12. 12.There are 11 yellow balloons and 7 red balloons. How many balloons are there in all?
  13. 13.3 + 3 =
  14. 14.5 + ? = 15
  15. 15.There are 4 red beads and 3 blue beads. How many beads are there in all?
  16. 16.There are 11 green beads and 9 red beads. How many beads are there in all?
  17. 17.16 + 1 =
  18. 18.There are 2 blue beads and 6 red beads. How many beads are there in all?
  19. 19.7 + 1 + 8 =
  20. 20.1 + ? = 19
  21. 21.Isha has 8 balls and gets 1 ball more. How many balls does Isha have now?
  22. 22.Diya has 5 shells and gets 8 shells more. How many shells does Diya have now?
  23. 23.11 + 4 =
  24. 24.10 + 7 =
  25. 25.Kabir has 10 kites and gets 5 kites more. How many kites does Kabir have now?
  26. 26.2 + ? = 5
  27. 27.Arjun has 5 crayons and gets 7 crayons more. How many crayons does Arjun have now?
  28. 28.? + 6 = 9
  29. 29.Aarav has 2 balloons and gets 18 balloons more. How many balloons does Aarav have now?
  30. 30.10 + ? = 20
  31. 31.5 + 1 + 10 =
  32. 32.Ananya has 2 balloons and gets 18 balloons more. How many balloons does Ananya have now?
  33. 33.12 + 3 =
  34. 34.10 + 5 =
  35. 35.There are 9 green balls and 9 red balls. How many balls are there in all?
  36. 36.Manav has 12 balloons and gets 6 balloons more. How many balloons does Manav have now?
  37. 37.There are 3 blue flowers and 2 green flowers. How many flowers are there in all?
  38. 38.? + 4 = 5
  39. 39.1 + 5 + 11 =
  40. 40.10 + 9 =

Answer key

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

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