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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 389 · 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. 1.5 + 6 + 6 =
  2. 2.8 + 5 =
  3. 3.2 + 8 =
  4. 4.4 + ? = 17
  5. 5.There are 11 blue crayons and 6 yellow crayons. How many crayons are there in all?
  6. 6.There are 2 blue balloons and 9 white balloons. How many balloons are there in all?
  7. 7.18 + ? = 20
  8. 8.There are 11 pink kites and 5 white kites. How many kites are there in all?
  9. 9.Gurpreet has 9 balls and gets 5 balls more. How many balls does Gurpreet have now?
  10. 10.? + 2 = 13
  11. 11.4 + ? = 6
  12. 12.10 + 5 =
  13. 13.There are 3 white flowers and 3 blue flowers. How many flowers are there in all?
  14. 14.There are 3 blue crayons and 4 green crayons. How many crayons are there in all?
  15. 15.? + 4 = 7
  16. 16.11 + 7 =
  17. 17.6 + 1 =
  18. 18.Isha has 11 kites and gets 9 kites more. How many kites does Isha have now?
  19. 19.3 + 3 + 9 =
  20. 20.8 + 8 + 1 =
  21. 21.? + 4 = 14
  22. 22.6 + 2 + 2 =
  23. 23.Ananya has 5 shells and gets 10 shells more. How many shells does Ananya have now?
  24. 24.4 + ? = 5
  25. 25.There are 2 yellow flowers and 9 white flowers. How many flowers are there in all?
  26. 26.4 + 11 =
  27. 27.? + 2 = 5
  28. 28.13 + ? = 14
  29. 29.Ananya has 7 laddoos and gets 5 laddoos more. How many laddoos does Ananya have now?
  30. 30.18 + 1 =
  31. 31.Aarav has 3 kites and gets 4 kites more. How many kites does Aarav have now?
  32. 32.Isha has 12 crayons and gets 5 crayons more. How many crayons does Isha have now?
  33. 33.There are 2 yellow balls and 4 red balls. How many balls are there in all?
  34. 34.6 + 6 + 7 =
  35. 35.2 + 5 + 4 =
  36. 36.6 + 8 + 3 =
  37. 37.Rohan has 10 crayons and gets 8 crayons more. How many crayons does Rohan have now?
  38. 38.? + 12 = 14
  39. 39.There are 9 yellow flowers and 8 blue flowers. How many flowers are there in all?
  40. 40.Tara has 10 balloons and gets 3 balloons more. How many balloons does Tara have now?

Answer key

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

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