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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 245 · 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.? + 1 = 6
  2. 2.Joseph has 13 books and gets 1 book more. How many books does Joseph have now?
  3. 3.There are 11 yellow beads and 5 blue beads. How many beads are there in all?
  4. 4.9 + 9 =
  5. 5.Ishaan has 11 books and gets 9 books more. How many books does Ishaan have now?
  6. 6.5 + 7 + 1 =
  7. 7.6 + 9 =
  8. 8.17 + 3 =
  9. 9.10 + 9 =
  10. 10.Priya has 9 balloons and gets 11 balloons more. How many balloons does Priya have now?
  11. 11.1 + 2 + 1 =
  12. 12.7 + 5 + 6 =
  13. 13.? + 2 = 16
  14. 14.12 + ? = 17
  15. 15.8 + 2 + 6 =
  16. 16.There are 7 blue balls and 8 pink balls. How many balls are there in all?
  17. 17.18 + 2 =
  18. 18.? + 12 = 16
  19. 19.Joseph has 14 balls and gets 2 balls more. How many balls does Joseph have now?
  20. 20.Ananya has 10 flowers and gets 1 flower more. How many flowers does Ananya have now?
  21. 21.15 + ? = 18
  22. 22.7 + 6 + 5 =
  23. 23.There are 6 pink kites and 4 blue kites. How many kites are there in all?
  24. 24.Aditya has 10 balloons and gets 3 balloons more. How many balloons does Aditya have now?
  25. 25.2 + 3 =
  26. 26.12 + 3 =
  27. 27.8 + 3 + 6 =
  28. 28.3 + ? = 9
  29. 29.Gurpreet has 9 marbles and gets 7 marbles more. How many marbles does Gurpreet have now?
  30. 30.16 + 2 =
  31. 31.4 + 5 =
  32. 32.There are 2 pink balloons and 11 white balloons. How many balloons are there in all?
  33. 33.? + 7 = 9
  34. 34.5 + 4 + 8 =
  35. 35.1 + 1 =
  36. 36.There are 8 red beads and 9 white beads. How many beads are there in all?
  37. 37.? + 1 = 5
  38. 38.16 + 3 =
  39. 39.There are 5 blue flowers and 2 red flowers. How many flowers are there in all?
  40. 40.2 + 5 + 1 =

Answer key

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

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