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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 236 · 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. 1.8 + 3 =
  2. 2.There are 7 yellow flowers and 6 red flowers. How many flowers are there in all?
  3. 3.6 + 3 =
  4. 4.7 + 13 =
  5. 5.There are 5 red balls and 2 green balls. How many balls are there in all?
  6. 6.1 + 1 + 8 =
  7. 7.There are 11 blue crayons and 2 red crayons. How many crayons are there in all?
  8. 8.1 + ? = 10
  9. 9.3 + ? = 11
  10. 10.There are 2 blue balls and 6 pink balls. How many balls are there in all?
  11. 11.17 + 2 =
  12. 12.Vivaan has 5 laddoos and gets 1 laddoo more. How many laddoos does Vivaan have now?
  13. 13.There are 10 green flowers and 6 white flowers. How many flowers are there in all?
  14. 14.15 + 1 =
  15. 15.? + 12 = 17
  16. 16.Ishaan has 11 books and gets 3 books more. How many books does Ishaan have now?
  17. 17.Gurpreet has 11 pencils and gets 3 pencils more. How many pencils does Gurpreet have now?
  18. 18.Isha has 7 laddoos and gets 1 laddoo more. How many laddoos does Isha have now?
  19. 19.? + 1 = 17
  20. 20.10 + 5 =
  21. 21.3 + 7 + 7 =
  22. 22.7 + 10 =
  23. 23.6 + 4 + 1 =
  24. 24.3 + ? = 12
  25. 25.14 + 5 =
  26. 26.12 + 4 =
  27. 27.3 + 8 + 6 =
  28. 28.9 + 4 =
  29. 29.16 + 1 =
  30. 30.18 + 2 =
  31. 31.Sneha has 5 balloons and gets 5 balloons more. How many balloons does Sneha have now?
  32. 32.There are 10 yellow beads and 7 white beads. How many beads are there in all?
  33. 33.7 + 5 + 4 =
  34. 34.Isha has 5 flowers and gets 4 flowers more. How many flowers does Isha have now?
  35. 35.There are 8 green kites and 5 red kites. How many kites are there in all?
  36. 36.Gurpreet has 7 books and gets 6 books more. How many books does Gurpreet have now?
  37. 37.11 + 5 =
  38. 38.Joseph has 2 kites and gets 3 kites more. How many kites does Joseph have now?
  39. 39.? + 2 = 9
  40. 40.8 + 7 + 3 =

Answer key

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

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