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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 824 · 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.There are 8 red flowers and 12 green flowers. How many flowers are there in all?
  2. 2.6 + 2 + 9 =
  3. 3.2 + 3 =
  4. 4.13 + 4 =
  5. 5.Saanvi has 13 mangoes and gets 3 mangoes more. How many mangoes does Saanvi have now?
  6. 6.There are 8 blue beads and 9 yellow beads. How many beads are there in all?
  7. 7.There are 10 yellow balloons and 4 red balloons. How many balloons are there in all?
  8. 8.Kabir has 11 books and gets 2 books more. How many books does Kabir have now?
  9. 9.7 + 10 =
  10. 10.There are 7 white balloons and 8 pink balloons. How many balloons are there in all?
  11. 11.Lakshmi has 11 bananas and gets 6 bananas more. How many bananas does Lakshmi have now?
  12. 12.5 + 3 + 7 =
  13. 13.Ananya has 15 marbles and gets 1 marble more. How many marbles does Ananya have now?
  14. 14.8 + 12 =
  15. 15.6 + 5 + 5 =
  16. 16.There are 10 red kites and 4 yellow kites. How many kites are there in all?
  17. 17.10 + ? = 19
  18. 18.Kabir has 8 books and gets 2 books more. How many books does Kabir have now?
  19. 19.1 + 14 =
  20. 20.1 + ? = 3
  21. 21.? + 4 = 14
  22. 22.Dev has 5 balloons and gets 14 balloons more. How many balloons does Dev have now?
  23. 23.Aarav has 5 marbles and gets 5 marbles more. How many marbles does Aarav have now?
  24. 24.6 + 7 =
  25. 25.7 + 7 + 5 =
  26. 26.11 + 7 =
  27. 27.There are 7 pink beads and 5 red beads. How many beads are there in all?
  28. 28.9 + 11 =
  29. 29.10 + ? = 11
  30. 30.11 + 5 =
  31. 31.Karan has 10 marbles and gets 3 marbles more. How many marbles does Karan have now?
  32. 32.13 + 7 =
  33. 33.There are 5 blue crayons and 2 yellow crayons. How many crayons are there in all?
  34. 34.There are 3 white balloons and 5 pink balloons. How many balloons are there in all?
  35. 35.15 + 2 =
  36. 36.There are 9 red crayons and 8 blue crayons. How many crayons are there in all?
  37. 37.There are 8 white beads and 10 red beads. How many beads are there in all?
  38. 38.Zoya has 9 flowers and gets 3 flowers more. How many flowers does Zoya have now?
  39. 39.8 + 4 + 6 =
  40. 40.7 + 3 =

Answer key

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

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