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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 639 · 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. 1.10 + 3 =
  2. 2.Saanvi has 3 shells and gets 5 shells more. How many shells does Saanvi have now?
  3. 3.1 + ? = 7
  4. 4.6 + 7 =
  5. 5.Vivaan has 5 marbles and gets 13 marbles more. How many marbles does Vivaan have now?
  6. 6.12 + 4 =
  7. 7.19 + 1 =
  8. 8.3 + 8 + 9 =
  9. 9.Arjun has 8 crayons and gets 8 crayons more. How many crayons does Arjun have now?
  10. 10.16 + 3 =
  11. 11.Meera has 6 pencils and gets 8 pencils more. How many pencils does Meera have now?
  12. 12.5 + 1 =
  13. 13.3 + 6 + 6 =
  14. 14.5 + 12 =
  15. 15.Kavya has 2 balls and gets 6 balls more. How many balls does Kavya have now?
  16. 16.18 + 1 =
  17. 17.6 + 7 + 5 =
  18. 18.5 + 6 + 8 =
  19. 19.Nisha has 2 pencils and gets 3 pencils more. How many pencils does Nisha have now?
  20. 20.There are 3 blue beads and 10 green beads. How many beads are there in all?
  21. 21.13 + 3 =
  22. 22.14 + 6 =
  23. 23.16 + 4 =
  24. 24.Vivaan has 13 laddoos and gets 6 laddoos more. How many laddoos does Vivaan have now?
  25. 25.6 + 10 =
  26. 26.15 + 1 =
  27. 27.6 + 6 =
  28. 28.3 + 7 + 2 =
  29. 29.1 + 18 =
  30. 30.8 + 7 + 3 =
  31. 31.11 + 8 =
  32. 32.3 + 2 + 9 =
  33. 33.Manav has 12 flowers and gets 7 flowers more. How many flowers does Manav have now?
  34. 34.There are 7 red balloons and 4 blue balloons. How many balloons are there in all?
  35. 35.6 + 14 =
  36. 36.2 + 4 + 12 =
  37. 37.1 + 7 + 11 =
  38. 38.16 + 1 =
  39. 39.14 + 5 =
  40. 40.Tara has 14 marbles and gets 1 marble more. How many marbles does Tara have now?

Answer key

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

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