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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 756 · 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.? + 3 = 7
  2. 2.Gurpreet has 10 pencils and gets 10 pencils more. How many pencils does Gurpreet have now?
  3. 3.8 + 2 + 9 =
  4. 4.There are 11 green flowers and 9 red flowers. How many flowers are there in all?
  5. 5.6 + 10 =
  6. 6.3 + 4 + 2 =
  7. 7.3 + 2 + 9 =
  8. 8.? + 1 = 7
  9. 9.Manav has 9 books and gets 9 books more. How many books does Manav have now?
  10. 10.? + 3 = 17
  11. 11.4 + 13 =
  12. 12.14 + 1 =
  13. 13.3 + 6 =
  14. 14.There are 3 white balls and 11 yellow balls. How many balls are there in all?
  15. 15.14 + ? = 18
  16. 16.8 + 3 + 2 =
  17. 17.There are 3 blue crayons and 13 yellow crayons. How many crayons are there in all?
  18. 18.? + 3 = 4
  19. 19.1 + 1 + 1 =
  20. 20.13 + ? = 20
  21. 21.1 + 2 + 14 =
  22. 22.Joseph has 14 mangoes and gets 1 mango more. How many mangoes does Joseph have now?
  23. 23.2 + ? = 16
  24. 24.There are 10 white balls and 3 blue balls. How many balls are there in all?
  25. 25.There are 6 green balloons and 5 yellow balloons. How many balloons are there in all?
  26. 26.4 + 2 + 11 =
  27. 27.7 + 2 + 6 =
  28. 28.8 + 2 + 6 =
  29. 29.Aarav has 2 balloons and gets 17 balloons more. How many balloons does Aarav have now?
  30. 30.There are 7 green balloons and 11 yellow balloons. How many balloons are there in all?
  31. 31.? + 4 = 20
  32. 32.There are 2 blue beads and 15 white beads. How many beads are there in all?
  33. 33.3 + 2 + 13 =
  34. 34.13 + 5 =
  35. 35.10 + 2 =
  36. 36.3 + 1 =
  37. 37.18 + 2 =
  38. 38.There are 4 red balls and 15 pink balls. How many balls are there in all?
  39. 39.8 + 8 + 4 =
  40. 40.1 + 2 + 10 =

Answer key

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

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