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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 127 · 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 + ? = 19
  2. 2.12 + 3 =
  3. 3.? + 1 = 15
  4. 4.Rahul has 14 pencils and gets 4 pencils more. How many pencils does Rahul have now?
  5. 5.Aditya has 9 kites and gets 3 kites more. How many kites does Aditya have now?
  6. 6.11 + 3 =
  7. 7.? + 16 = 19
  8. 8.8 + 2 =
  9. 9.9 + 10 =
  10. 10.Nisha has 9 bananas and gets 5 bananas more. How many bananas does Nisha have now?
  11. 11.19 + 1 =
  12. 12.There are 2 yellow beads and 5 pink beads. How many beads are there in all?
  13. 13.Rohan has 5 balls and gets 7 balls more. How many balls does Rohan have now?
  14. 14.Sneha has 5 pencils and gets 15 pencils more. How many pencils does Sneha have now?
  15. 15.There are 2 pink crayons and 3 yellow crayons. How many crayons are there in all?
  16. 16.? + 2 = 20
  17. 17.6 + 4 + 10 =
  18. 18.7 + ? = 9
  19. 19.Lakshmi has 13 laddoos and gets 3 laddoos more. How many laddoos does Lakshmi have now?
  20. 20.7 + 5 + 8 =
  21. 21.? + 16 = 18
  22. 22.6 + 7 =
  23. 23.Zoya has 7 books and gets 6 books more. How many books does Zoya have now?
  24. 24.1 + 7 + 4 =
  25. 25.5 + 2 + 13 =
  26. 26.Ananya has 9 shells and gets 11 shells more. How many shells does Ananya have now?
  27. 27.8 + 10 =
  28. 28.Tara has 7 crayons and gets 11 crayons more. How many crayons does Tara have now?
  29. 29.Vivaan has 3 balls and gets 11 balls more. How many balls does Vivaan have now?
  30. 30.9 + ? = 11
  31. 31.There are 6 white beads and 5 green beads. How many beads are there in all?
  32. 32.There are 10 red flowers and 5 green flowers. How many flowers are there in all?
  33. 33.Nisha has 2 balloons and gets 14 balloons more. How many balloons does Nisha have now?
  34. 34.? + 15 = 18
  35. 35.There are 2 white balloons and 18 pink balloons. How many balloons are there in all?
  36. 36.7 + 3 =
  37. 37.Joseph has 15 flowers and gets 3 flowers more. How many flowers does Joseph have now?
  38. 38.Isha has 2 balls and gets 18 balls more. How many balls does Isha have now?
  39. 39.10 + ? = 15
  40. 40.? + 13 = 19

Answer key

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

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