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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 440 · 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.Sneha has 11 books and gets 8 books more. How many books does Sneha have now?
  2. 2.3 + 2 + 14 =
  3. 3.5 + 1 + 6 =
  4. 4.8 + 1 + 6 =
  5. 5.2 + 7 + 11 =
  6. 6.Rahul has 5 crayons and gets 6 crayons more. How many crayons does Rahul have now?
  7. 7.6 + 6 + 5 =
  8. 8.7 + 5 =
  9. 9.4 + 8 + 8 =
  10. 10.There are 8 white balloons and 10 yellow balloons. How many balloons are there in all?
  11. 11.8 + ? = 16
  12. 12.? + 6 = 15
  13. 13.There are 5 white crayons and 14 red crayons. How many crayons are there in all?
  14. 14.There are 12 pink balloons and 6 white balloons. How many balloons are there in all?
  15. 15.6 + 2 + 6 =
  16. 16.There are 2 pink crayons and 5 green crayons. How many crayons are there in all?
  17. 17.Joseph has 9 kites and gets 2 kites more. How many kites does Joseph have now?
  18. 18.3 + 15 =
  19. 19.4 + 3 + 4 =
  20. 20.There are 7 pink crayons and 4 blue crayons. How many crayons are there in all?
  21. 21.Ishaan has 12 crayons and gets 3 crayons more. How many crayons does Ishaan have now?
  22. 22.There are 12 blue balls and 7 red balls. How many balls are there in all?
  23. 23.4 + 6 + 4 =
  24. 24.5 + 8 + 7 =
  25. 25.Dev has 6 flowers and gets 8 flowers more. How many flowers does Dev have now?
  26. 26.3 + ? = 20
  27. 27.? + 1 = 3
  28. 28.There are 5 blue balloons and 5 white balloons. How many balloons are there in all?
  29. 29.7 + 1 + 3 =
  30. 30.5 + 3 + 7 =
  31. 31.5 + 5 + 7 =
  32. 32.18 + 2 =
  33. 33.15 + 4 =
  34. 34.2 + 10 =
  35. 35.15 + 5 =
  36. 36.7 + 2 =
  37. 37.There are 5 white balloons and 12 blue balloons. How many balloons are there in all?
  38. 38.6 + 1 =
  39. 39.5 + 3 =
  40. 40.4 + 4 =

Answer key

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

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