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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 492 · 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.Joseph has 12 shells and gets 3 shells more. How many shells does Joseph have now?
  2. 2.2 + ? = 7
  3. 3.2 + ? = 3
  4. 4.There are 9 pink balloons and 3 green balloons. How many balloons are there in all?
  5. 5.12 + ? = 20
  6. 6.? + 8 = 11
  7. 7.4 + 2 + 6 =
  8. 8.Dev has 7 balloons and gets 3 balloons more. How many balloons does Dev have now?
  9. 9.There are 3 blue crayons and 6 yellow crayons. How many crayons are there in all?
  10. 10.18 + ? = 20
  11. 11.8 + 6 + 2 =
  12. 12.16 + 4 =
  13. 13.There are 7 blue flowers and 4 green flowers. How many flowers are there in all?
  14. 14.There are 10 white balls and 5 yellow balls. How many balls are there in all?
  15. 15.There are 3 red flowers and 2 yellow flowers. How many flowers are there in all?
  16. 16.There are 5 green flowers and 8 red flowers. How many flowers are there in all?
  17. 17.17 + 2 =
  18. 18.There are 4 red crayons and 11 white crayons. How many crayons are there in all?
  19. 19.3 + 10 =
  20. 20.9 + 5 =
  21. 21.2 + 3 + 7 =
  22. 22.There are 10 blue kites and 2 white kites. How many kites are there in all?
  23. 23.4 + 4 + 11 =
  24. 24.4 + 7 + 7 =
  25. 25.7 + ? = 13
  26. 26.? + 5 = 6
  27. 27.There are 9 green flowers and 3 yellow flowers. How many flowers are there in all?
  28. 28.Lakshmi has 13 balloons and gets 7 balloons more. How many balloons does Lakshmi have now?
  29. 29.Rohan has 4 kites and gets 11 kites more. How many kites does Rohan have now?
  30. 30.6 + 12 =
  31. 31.Saanvi has 4 mangoes and gets 1 mango more. How many mangoes does Saanvi have now?
  32. 32.13 + 2 =
  33. 33.Tara has 11 shells and gets 6 shells more. How many shells does Tara have now?
  34. 34.2 + 4 =
  35. 35.? + 1 = 5
  36. 36.There are 4 blue flowers and 2 yellow flowers. How many flowers are there in all?
  37. 37.Meera has 14 mangoes and gets 5 mangoes more. How many mangoes does Meera have now?
  38. 38.17 + 3 =
  39. 39.There are 10 red kites and 2 yellow kites. How many kites are there in all?
  40. 40.There are 11 blue kites and 9 pink kites. How many kites are there in all?

Answer key

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

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