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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 358 · 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 + 1 + 10 =
  2. 2.6 + 5 =
  3. 3.There are 4 green flowers and 16 yellow flowers. How many flowers are there in all?
  4. 4.7 + 2 + 6 =
  5. 5.Aditya has 11 mangoes and gets 5 mangoes more. How many mangoes does Aditya have now?
  6. 6.4 + 4 + 6 =
  7. 7.7 + 13 =
  8. 8.There are 4 pink flowers and 4 green flowers. How many flowers are there in all?
  9. 9.9 + 2 =
  10. 10.Saanvi has 11 flowers and gets 1 flower more. How many flowers does Saanvi have now?
  11. 11.2 + ? = 4
  12. 12.There are 9 red balls and 3 blue balls. How many balls are there in all?
  13. 13.Ananya has 13 mangoes and gets 5 mangoes more. How many mangoes does Ananya have now?
  14. 14.Joseph has 9 balls and gets 7 balls more. How many balls does Joseph have now?
  15. 15.5 + ? = 18
  16. 16.14 + 3 =
  17. 17.2 + ? = 3
  18. 18.There are 12 red balloons and 6 pink balloons. How many balloons are there in all?
  19. 19.Saanvi has 7 kites and gets 6 kites more. How many kites does Saanvi have now?
  20. 20.There are 3 yellow flowers and 4 green flowers. How many flowers are there in all?
  21. 21.Lakshmi has 5 marbles and gets 6 marbles more. How many marbles does Lakshmi have now?
  22. 22.4 + 4 + 5 =
  23. 23.1 + ? = 14
  24. 24.Tara has 6 laddoos and gets 13 laddoos more. How many laddoos does Tara have now?
  25. 25.? + 3 = 7
  26. 26.5 + ? = 9
  27. 27.There are 3 white balloons and 5 red balloons. How many balloons are there in all?
  28. 28.Diya has 11 balloons and gets 3 balloons more. How many balloons does Diya have now?
  29. 29.Diya has 4 books and gets 6 books more. How many books does Diya have now?
  30. 30.3 + 5 =
  31. 31.12 + 1 =
  32. 32.? + 9 = 15
  33. 33.8 + 4 + 8 =
  34. 34.4 + 6 =
  35. 35.Zoya has 11 books and gets 1 book more. How many books does Zoya have now?
  36. 36.5 + 8 + 2 =
  37. 37.There are 11 green balloons and 2 pink balloons. How many balloons are there in all?
  38. 38.7 + 3 =
  39. 39.There are 10 red flowers and 7 white flowers. How many flowers are there in all?
  40. 40.? + 8 = 13

Answer key

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

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