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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 670 · 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. 1.2 + 16 =
  2. 2.There are 5 white flowers and 3 green flowers. How many flowers are there in all?
  3. 3.Ishaan has 8 pencils and gets 3 pencils more. How many pencils does Ishaan have now?
  4. 4.There are 9 red flowers and 3 green flowers. How many flowers are there in all?
  5. 5.4 + 4 + 3 =
  6. 6.15 + 5 =
  7. 7.19 + 1 =
  8. 8.Zoya has 3 books and gets 17 books more. How many books does Zoya have now?
  9. 9.There are 10 yellow balls and 9 pink balls. How many balls are there in all?
  10. 10.Rahul has 2 pencils and gets 4 pencils more. How many pencils does Rahul have now?
  11. 11.7 + 13 =
  12. 12.There are 9 yellow flowers and 4 pink flowers. How many flowers are there in all?
  13. 13.There are 4 white flowers and 8 green flowers. How many flowers are there in all?
  14. 14.? + 2 = 6
  15. 15.There are 2 red balls and 18 white balls. How many balls are there in all?
  16. 16.Joseph has 4 books and gets 7 books more. How many books does Joseph have now?
  17. 17.6 + ? = 8
  18. 18.There are 10 green crayons and 9 white crayons. How many crayons are there in all?
  19. 19.13 + 4 =
  20. 20.7 + 3 + 8 =
  21. 21.6 + 1 + 9 =
  22. 22.Sneha has 2 kites and gets 6 kites more. How many kites does Sneha have now?
  23. 23.3 + ? = 10
  24. 24.8 + 10 =
  25. 25.1 + 7 + 4 =
  26. 26.There are 12 red kites and 2 white kites. How many kites are there in all?
  27. 27.There are 7 blue balloons and 3 pink balloons. How many balloons are there in all?
  28. 28.? + 1 = 14
  29. 29.4 + 11 =
  30. 30.Farhan has 9 pencils and gets 2 pencils more. How many pencils does Farhan have now?
  31. 31.? + 1 = 3
  32. 32.Farhan has 6 pencils and gets 3 pencils more. How many pencils does Farhan have now?
  33. 33.There are 4 green balloons and 5 red balloons. How many balloons are there in all?
  34. 34.5 + 11 =
  35. 35.7 + ? = 11
  36. 36.9 + 10 =
  37. 37.13 + 1 =
  38. 38.There are 12 white kites and 3 red kites. How many kites are there in all?
  39. 39.There are 3 red beads and 9 white beads. How many beads are there in all?
  40. 40.There are 8 red beads and 2 yellow beads. How many beads are there in all?

Answer key

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

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