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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 807 · 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. 1.14 + 1 =
  2. 2.There are 12 yellow flowers and 6 green flowers. How many flowers are there in all?
  3. 3.17 + 1 =
  4. 4.8 + 7 + 4 =
  5. 5.11 + 6 =
  6. 6.There are 9 white balls and 2 blue balls. How many balls are there in all?
  7. 7.2 + 16 =
  8. 8.Joseph has 15 kites and gets 5 kites more. How many kites does Joseph have now?
  9. 9.7 + 6 =
  10. 10.7 + 4 =
  11. 11.4 + 1 + 3 =
  12. 12.There are 6 red beads and 5 green beads. How many beads are there in all?
  13. 13.9 + 1 =
  14. 14.There are 10 green balloons and 9 pink balloons. How many balloons are there in all?
  15. 15.There are 9 green beads and 4 white beads. How many beads are there in all?
  16. 16.? + 2 = 9
  17. 17.12 + 4 =
  18. 18.Tara has 10 bananas and gets 8 bananas more. How many bananas does Tara have now?
  19. 19.There are 7 pink crayons and 5 yellow crayons. How many crayons are there in all?
  20. 20.5 + 2 =
  21. 21.Riya has 8 mangoes and gets 5 mangoes more. How many mangoes does Riya have now?
  22. 22.There are 3 green crayons and 13 red crayons. How many crayons are there in all?
  23. 23.Rahul has 13 mangoes and gets 3 mangoes more. How many mangoes does Rahul have now?
  24. 24.2 + ? = 5
  25. 25.6 + ? = 19
  26. 26.7 + 2 + 6 =
  27. 27.1 + 2 =
  28. 28.1 + ? = 4
  29. 29.3 + 7 + 2 =
  30. 30.Aditya has 6 balls and gets 11 balls more. How many balls does Aditya have now?
  31. 31.3 + 3 =
  32. 32.4 + 5 + 5 =
  33. 33.There are 4 red flowers and 14 blue flowers. How many flowers are there in all?
  34. 34.There are 4 pink crayons and 16 yellow crayons. How many crayons are there in all?
  35. 35.Ishaan has 3 books and gets 3 books more. How many books does Ishaan have now?
  36. 36.Farhan has 2 crayons and gets 16 crayons more. How many crayons does Farhan have now?
  37. 37.Aditya has 5 shells and gets 3 shells more. How many shells does Aditya have now?
  38. 38.Diya has 6 crayons and gets 3 crayons more. How many crayons does Diya have now?
  39. 39.2 + 6 + 12 =
  40. 40.There are 2 white beads and 10 yellow beads. How many beads are there in all?

Answer key

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

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