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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 184 · 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. 1.1 + 1 + 7 =
  2. 2.4 + ? = 7
  3. 3.There are 7 red flowers and 13 yellow flowers. How many flowers are there in all?
  4. 4.3 + ? = 9
  5. 5.Farhan has 15 laddoos and gets 1 laddoo more. How many laddoos does Farhan have now?
  6. 6.5 + 12 =
  7. 7.Priya has 2 bananas and gets 3 bananas more. How many bananas does Priya have now?
  8. 8.15 + 3 =
  9. 9.There are 8 blue kites and 2 yellow kites. How many kites are there in all?
  10. 10.8 + 2 + 7 =
  11. 11.17 + 2 =
  12. 12.10 + 7 =
  13. 13.Rahul has 12 pencils and gets 2 pencils more. How many pencils does Rahul have now?
  14. 14.3 + ? = 5
  15. 15.9 + 9 =
  16. 16.6 + 12 =
  17. 17.There are 3 red crayons and 6 green crayons. How many crayons are there in all?
  18. 18.There are 8 green balloons and 3 blue balloons. How many balloons are there in all?
  19. 19.There are 2 white kites and 4 yellow kites. How many kites are there in all?
  20. 20.13 + 4 =
  21. 21.Ananya has 10 shells and gets 7 shells more. How many shells does Ananya have now?
  22. 22.There are 6 pink balls and 11 yellow balls. How many balls are there in all?
  23. 23.4 + 4 =
  24. 24.5 + 5 + 9 =
  25. 25.There are 12 yellow flowers and 4 pink flowers. How many flowers are there in all?
  26. 26.1 + 4 + 1 =
  27. 27.There are 10 blue crayons and 8 yellow crayons. How many crayons are there in all?
  28. 28.4 + ? = 19
  29. 29.Isha has 14 marbles and gets 2 marbles more. How many marbles does Isha have now?
  30. 30.1 + ? = 3
  31. 31.3 + 3 =
  32. 32.10 + 10 =
  33. 33.? + 4 = 18
  34. 34.There are 10 white balloons and 9 pink balloons. How many balloons are there in all?
  35. 35.Meera has 7 marbles and gets 8 marbles more. How many marbles does Meera have now?
  36. 36.15 + 1 =
  37. 37.3 + 1 + 1 =
  38. 38.5 + 9 =
  39. 39.Saanvi has 7 mangoes and gets 6 mangoes more. How many mangoes does Saanvi have now?
  40. 40.1 + 6 + 7 =

Answer key

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

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