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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 371 · 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. 1.15 + 1 =
  2. 2.There are 8 yellow crayons and 2 pink crayons. How many crayons are there in all?
  3. 3.? + 4 = 9
  4. 4.14 + 2 =
  5. 5.Karan has 7 books and gets 13 books more. How many books does Karan have now?
  6. 6.8 + 4 + 7 =
  7. 7.2 + 5 + 9 =
  8. 8.3 + ? = 6
  9. 9.Sneha has 11 marbles and gets 3 marbles more. How many marbles does Sneha have now?
  10. 10.19 + 1 =
  11. 11.There are 4 blue balls and 5 yellow balls. How many balls are there in all?
  12. 12.Vivaan has 5 balloons and gets 15 balloons more. How many balloons does Vivaan have now?
  13. 13.1 + 2 + 10 =
  14. 14.12 + 6 =
  15. 15.There are 9 pink crayons and 6 green crayons. How many crayons are there in all?
  16. 16.There are 2 green kites and 8 red kites. How many kites are there in all?
  17. 17.There are 11 pink flowers and 4 blue flowers. How many flowers are there in all?
  18. 18.15 + ? = 17
  19. 19.4 + 9 =
  20. 20.3 + 13 =
  21. 21.2 + 2 + 15 =
  22. 22.8 + 7 + 2 =
  23. 23.1 + ? = 6
  24. 24.14 + ? = 19
  25. 25.Kabir has 2 marbles and gets 11 marbles more. How many marbles does Kabir have now?
  26. 26.6 + 6 + 3 =
  27. 27.Zoya has 10 balls and gets 9 balls more. How many balls does Zoya have now?
  28. 28.7 + 12 =
  29. 29.Zoya has 7 balls and gets 5 balls more. How many balls does Zoya have now?
  30. 30.3 + 3 + 6 =
  31. 31.Rohan has 4 marbles and gets 11 marbles more. How many marbles does Rohan have now?
  32. 32.? + 3 = 4
  33. 33.13 + 2 =
  34. 34.11 + 7 =
  35. 35.Rohan has 9 books and gets 10 books more. How many books does Rohan have now?
  36. 36.Kavya has 11 mangoes and gets 7 mangoes more. How many mangoes does Kavya have now?
  37. 37.1 + ? = 3
  38. 38.3 + 5 + 7 =
  39. 39.8 + 5 + 4 =
  40. 40.Ananya has 5 flowers and gets 11 flowers more. How many flowers does Ananya have now?

Answer key

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

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