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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 88 · 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.Rahul has 2 marbles and gets 11 marbles more. How many marbles does Rahul have now?
  2. 2.? + 2 = 5
  3. 3.1 + 5 =
  4. 4.16 + 1 =
  5. 5.? + 14 = 17
  6. 6.13 + 6 =
  7. 7.6 + 3 =
  8. 8.Manav has 2 crayons and gets 2 crayons more. How many crayons does Manav have now?
  9. 9.5 + 1 + 14 =
  10. 10.Dev has 6 books and gets 10 books more. How many books does Dev have now?
  11. 11.4 + 9 =
  12. 12.13 + 3 =
  13. 13.2 + 17 =
  14. 14.? + 2 = 8
  15. 15.16 + 3 =
  16. 16.Ishaan has 6 laddoos and gets 3 laddoos more. How many laddoos does Ishaan have now?
  17. 17.7 + 6 =
  18. 18.7 + 2 =
  19. 19.Saanvi has 3 mangoes and gets 5 mangoes more. How many mangoes does Saanvi have now?
  20. 20.There are 5 blue beads and 8 green beads. How many beads are there in all?
  21. 21.13 + 7 =
  22. 22.There are 3 white crayons and 15 pink crayons. How many crayons are there in all?
  23. 23.There are 4 pink balloons and 8 yellow balloons. How many balloons are there in all?
  24. 24.3 + 2 + 4 =
  25. 25.Ishaan has 6 balls and gets 6 balls more. How many balls does Ishaan have now?
  26. 26.19 + 1 =
  27. 27.There are 5 blue beads and 7 red beads. How many beads are there in all?
  28. 28.4 + ? = 6
  29. 29.There are 5 blue balloons and 8 green balloons. How many balloons are there in all?
  30. 30.18 + 1 =
  31. 31.17 + 2 =
  32. 32.5 + 8 + 3 =
  33. 33.Tara has 9 books and gets 10 books more. How many books does Tara have now?
  34. 34.7 + ? = 10
  35. 35.There are 4 pink beads and 9 green beads. How many beads are there in all?
  36. 36.Vivaan has 5 marbles and gets 6 marbles more. How many marbles does Vivaan have now?
  37. 37.6 + ? = 19
  38. 38.1 + ? = 7
  39. 39.10 + ? = 19
  40. 40.10 + ? = 12

Answer key

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

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