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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 414 · 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.? + 3 = 6
  2. 2.1 + 10 =
  3. 3.4 + 16 =
  4. 4.Rohan has 15 flowers and gets 4 flowers more. How many flowers does Rohan have now?
  5. 5.2 + 5 + 10 =
  6. 6.Joseph has 3 kites and gets 8 kites more. How many kites does Joseph have now?
  7. 7.Rohan has 6 balls and gets 3 balls more. How many balls does Rohan have now?
  8. 8.There are 11 blue flowers and 8 white flowers. How many flowers are there in all?
  9. 9.1 + 19 =
  10. 10.4 + 7 =
  11. 11.10 + 5 =
  12. 12.Priya has 11 marbles and gets 2 marbles more. How many marbles does Priya have now?
  13. 13.14 + ? = 17
  14. 14.? + 6 = 18
  15. 15.There are 3 red balloons and 5 blue balloons. How many balloons are there in all?
  16. 16.2 + 1 =
  17. 17.Farhan has 6 shells and gets 13 shells more. How many shells does Farhan have now?
  18. 18.? + 2 = 3
  19. 19.Diya has 9 flowers and gets 8 flowers more. How many flowers does Diya have now?
  20. 20.There are 5 yellow balls and 5 green balls. How many balls are there in all?
  21. 21.There are 6 yellow balls and 10 green balls. How many balls are there in all?
  22. 22.2 + 2 + 7 =
  23. 23.Joseph has 10 flowers and gets 6 flowers more. How many flowers does Joseph have now?
  24. 24.7 + 5 =
  25. 25.3 + ? = 4
  26. 26.2 + 3 + 8 =
  27. 27.Vivaan has 6 books and gets 3 books more. How many books does Vivaan have now?
  28. 28.? + 11 = 19
  29. 29.Diya has 8 balloons and gets 9 balloons more. How many balloons does Diya have now?
  30. 30.17 + 3 =
  31. 31.3 + 7 + 1 =
  32. 32.8 + 3 =
  33. 33.3 + 6 =
  34. 34.2 + 2 =
  35. 35.4 + 4 =
  36. 36.Arjun has 6 kites and gets 4 kites more. How many kites does Arjun have now?
  37. 37.4 + 5 + 7 =
  38. 38.Zoya has 13 pencils and gets 7 pencils more. How many pencils does Zoya have now?
  39. 39.Rahul has 13 pencils and gets 7 pencils more. How many pencils does Rahul have now?
  40. 40.Farhan has 5 balloons and gets 14 balloons more. How many balloons does Farhan have now?

Answer key

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

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