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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 646 · 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.There are 6 red crayons and 10 pink crayons. How many crayons are there in all?
  2. 2.There are 3 yellow flowers and 8 white flowers. How many flowers are there in all?
  3. 3.1 + ? = 7
  4. 4.Riya has 8 marbles and gets 2 marbles more. How many marbles does Riya have now?
  5. 5.13 + 3 =
  6. 6.There are 6 red flowers and 13 blue flowers. How many flowers are there in all?
  7. 7.There are 7 green balls and 3 red balls. How many balls are there in all?
  8. 8.17 + 2 =
  9. 9.5 + 14 =
  10. 10.1 + ? = 4
  11. 11.6 + ? = 8
  12. 12.2 + 14 =
  13. 13.2 + 7 + 8 =
  14. 14.3 + 5 =
  15. 15.2 + 11 =
  16. 16.Aditya has 7 laddoos and gets 5 laddoos more. How many laddoos does Aditya have now?
  17. 17.17 + 1 =
  18. 18.12 + 4 =
  19. 19.Diya has 4 marbles and gets 3 marbles more. How many marbles does Diya have now?
  20. 20.5 + 3 + 1 =
  21. 21.7 + 12 =
  22. 22.14 + 1 =
  23. 23.There are 8 green beads and 2 pink beads. How many beads are there in all?
  24. 24.15 + 4 =
  25. 25.Ishaan has 4 pencils and gets 8 pencils more. How many pencils does Ishaan have now?
  26. 26.Joseph has 5 books and gets 13 books more. How many books does Joseph have now?
  27. 27.Kavya has 3 books and gets 12 books more. How many books does Kavya have now?
  28. 28.Pooja has 13 shells and gets 2 shells more. How many shells does Pooja have now?
  29. 29.2 + ? = 11
  30. 30.Riya has 4 laddoos and gets 10 laddoos more. How many laddoos does Riya have now?
  31. 31.1 + 13 =
  32. 32.3 + 5 + 2 =
  33. 33.? + 9 = 19
  34. 34.13 + ? = 17
  35. 35.7 + 8 + 1 =
  36. 36.1 + 9 =
  37. 37.15 + 5 =
  38. 38.10 + 8 =
  39. 39.Ishaan has 4 books and gets 5 books more. How many books does Ishaan have now?
  40. 40.1 + 1 + 16 =

Answer key

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

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