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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 688 · 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. 1.4 + 8 + 1 =
  2. 2.1 + 8 + 2 =
  3. 3.5 + 8 =
  4. 4.Rohan has 3 balls and gets 2 balls more. How many balls does Rohan have now?
  5. 5.? + 3 = 8
  6. 6.5 + ? = 6
  7. 7.Diya has 15 crayons and gets 3 crayons more. How many crayons does Diya have now?
  8. 8.15 + 5 =
  9. 9.There are 7 blue flowers and 7 pink flowers. How many flowers are there in all?
  10. 10.There are 9 red crayons and 4 pink crayons. How many crayons are there in all?
  11. 11.There are 9 red kites and 11 blue kites. How many kites are there in all?
  12. 12.7 + 5 + 3 =
  13. 13.? + 1 = 9
  14. 14.? + 1 = 5
  15. 15.There are 7 yellow balloons and 8 red balloons. How many balloons are there in all?
  16. 16.8 + 6 =
  17. 17.There are 2 blue flowers and 4 yellow flowers. How many flowers are there in all?
  18. 18.Gurpreet has 5 flowers and gets 10 flowers more. How many flowers does Gurpreet have now?
  19. 19.5 + 7 =
  20. 20.Meera has 5 shells and gets 14 shells more. How many shells does Meera have now?
  21. 21.Aditya has 12 books and gets 3 books more. How many books does Aditya have now?
  22. 22.11 + 4 =
  23. 23.14 + 4 =
  24. 24.? + 13 = 16
  25. 25.Saanvi has 11 kites and gets 5 kites more. How many kites does Saanvi have now?
  26. 26.13 + 7 =
  27. 27.? + 7 = 16
  28. 28.There are 7 white flowers and 6 red flowers. How many flowers are there in all?
  29. 29.8 + 3 + 1 =
  30. 30.4 + ? = 9
  31. 31.5 + 2 =
  32. 32.Isha has 15 shells and gets 3 shells more. How many shells does Isha have now?
  33. 33.11 + 6 =
  34. 34.? + 10 = 12
  35. 35.? + 3 = 7
  36. 36.19 + 1 =
  37. 37.Kabir has 11 laddoos and gets 9 laddoos more. How many laddoos does Kabir have now?
  38. 38.Arjun has 14 flowers and gets 5 flowers more. How many flowers does Arjun have now?
  39. 39.3 + 16 =
  40. 40.2 + 8 =

Answer key

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

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