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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 40 · 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. 1.6 + 1 =
  2. 2.11 + 4 =
  3. 3.10 + 8 =
  4. 4.There are 4 white kites and 13 pink kites. How many kites are there in all?
  5. 5.Arjun has 7 shells and gets 9 shells more. How many shells does Arjun have now?
  6. 6.3 + 2 + 5 =
  7. 7.8 + 3 + 7 =
  8. 8.5 + 4 + 5 =
  9. 9.3 + 8 + 9 =
  10. 10.4 + ? = 10
  11. 11.2 + 8 =
  12. 12.4 + 16 =
  13. 13.7 + 3 =
  14. 14.1 + 4 + 3 =
  15. 15.There are 11 yellow kites and 3 pink kites. How many kites are there in all?
  16. 16.Nisha has 11 marbles and gets 4 marbles more. How many marbles does Nisha have now?
  17. 17.There are 3 yellow beads and 9 red beads. How many beads are there in all?
  18. 18.1 + 16 =
  19. 19.11 + 1 =
  20. 20.There are 8 red beads and 7 blue beads. How many beads are there in all?
  21. 21.There are 7 yellow kites and 12 white kites. How many kites are there in all?
  22. 22.There are 6 pink balloons and 8 red balloons. How many balloons are there in all?
  23. 23.2 + ? = 3
  24. 24.8 + 9 =
  25. 25.? + 1 = 6
  26. 26.6 + 6 =
  27. 27.There are 4 pink beads and 4 green beads. How many beads are there in all?
  28. 28.? + 1 = 10
  29. 29.Aditya has 4 marbles and gets 12 marbles more. How many marbles does Aditya have now?
  30. 30.Vivaan has 7 books and gets 11 books more. How many books does Vivaan have now?
  31. 31.8 + 2 =
  32. 32.Joseph has 9 shells and gets 6 shells more. How many shells does Joseph have now?
  33. 33.7 + 6 + 2 =
  34. 34.There are 11 red flowers and 8 white flowers. How many flowers are there in all?
  35. 35.3 + 8 + 8 =
  36. 36.8 + 1 + 6 =
  37. 37.? + 5 = 6
  38. 38.7 + 6 =
  39. 39.There are 3 red flowers and 3 white flowers. How many flowers are there in all?
  40. 40.6 + 7 + 7 =

Answer key

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

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