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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 152 · 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 6 yellow beads and 5 blue beads. How many beads are there in all?
  2. 2.3 + 8 + 7 =
  3. 3.7 + 1 + 7 =
  4. 4.6 + 2 =
  5. 5.8 + 3 =
  6. 6.9 + 7 =
  7. 7.7 + 2 + 1 =
  8. 8.5 + 4 + 9 =
  9. 9.5 + 8 + 3 =
  10. 10.There are 5 white kites and 14 red kites. How many kites are there in all?
  11. 11.7 + 5 + 1 =
  12. 12.? + 10 = 13
  13. 13.9 + 5 =
  14. 14.17 + 1 =
  15. 15.Riya has 5 laddoos and gets 1 laddoo more. How many laddoos does Riya have now?
  16. 16.Joseph has 11 balloons and gets 1 balloon more. How many balloons does Joseph have now?
  17. 17.There are 8 red flowers and 3 pink flowers. How many flowers are there in all?
  18. 18.8 + 3 + 9 =
  19. 19.? + 1 = 6
  20. 20.Ishaan has 7 balloons and gets 10 balloons more. How many balloons does Ishaan have now?
  21. 21.Isha has 14 marbles and gets 1 marble more. How many marbles does Isha have now?
  22. 22.Arjun has 5 balls and gets 5 balls more. How many balls does Arjun have now?
  23. 23.12 + 1 =
  24. 24.There are 7 pink crayons and 3 red crayons. How many crayons are there in all?
  25. 25.Rahul has 2 balloons and gets 15 balloons more. How many balloons does Rahul have now?
  26. 26.11 + 9 =
  27. 27.2 + 8 =
  28. 28.4 + 1 + 9 =
  29. 29.4 + 3 + 11 =
  30. 30.5 + 6 + 7 =
  31. 31.14 + 4 =
  32. 32.3 + 1 + 8 =
  33. 33.There are 4 blue flowers and 2 yellow flowers. How many flowers are there in all?
  34. 34.7 + ? = 8
  35. 35.2 + 6 + 9 =
  36. 36.2 + 1 + 17 =
  37. 37.There are 12 yellow crayons and 4 blue crayons. How many crayons are there in all?
  38. 38.7 + 5 + 5 =
  39. 39.There are 8 green kites and 4 red kites. How many kites are there in all?
  40. 40.6 + 13 =

Answer key

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

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