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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 417 · 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 + ? = 16
  2. 2.Karan has 6 marbles and gets 14 marbles more. How many marbles does Karan have now?
  3. 3.? + 15 = 20
  4. 4.There are 8 yellow balls and 11 red balls. How many balls are there in all?
  5. 5.There are 3 yellow balloons and 2 white balloons. How many balloons are there in all?
  6. 6.3 + 5 + 7 =
  7. 7.2 + 7 =
  8. 8.Tara has 15 books and gets 2 books more. How many books does Tara have now?
  9. 9.Rohan has 7 marbles and gets 3 marbles more. How many marbles does Rohan have now?
  10. 10.Aditya has 14 crayons and gets 3 crayons more. How many crayons does Aditya have now?
  11. 11.6 + 8 + 3 =
  12. 12.There are 11 red flowers and 9 pink flowers. How many flowers are there in all?
  13. 13.17 + 2 =
  14. 14.8 + 12 =
  15. 15.Kavya has 9 books and gets 10 books more. How many books does Kavya have now?
  16. 16.7 + 4 =
  17. 17.6 + 8 + 6 =
  18. 18.There are 2 green beads and 2 blue beads. How many beads are there in all?
  19. 19.? + 12 = 18
  20. 20.There are 3 red crayons and 15 white crayons. How many crayons are there in all?
  21. 21.2 + 2 + 5 =
  22. 22.There are 2 red flowers and 15 pink flowers. How many flowers are there in all?
  23. 23.8 + 2 =
  24. 24.2 + 2 + 11 =
  25. 25.Gurpreet has 11 pencils and gets 6 pencils more. How many pencils does Gurpreet have now?
  26. 26.8 + 3 + 1 =
  27. 27.Diya has 3 laddoos and gets 2 laddoos more. How many laddoos does Diya have now?
  28. 28.12 + ? = 20
  29. 29.Tara has 2 bananas and gets 10 bananas more. How many bananas does Tara have now?
  30. 30.? + 6 = 8
  31. 31.1 + 2 =
  32. 32.2 + 8 + 2 =
  33. 33.13 + 2 =
  34. 34.13 + 4 =
  35. 35.There are 3 green flowers and 11 blue flowers. How many flowers are there in all?
  36. 36.Meera has 8 crayons and gets 11 crayons more. How many crayons does Meera have now?
  37. 37.2 + 2 + 3 =
  38. 38.? + 8 = 15
  39. 39.7 + 6 + 6 =
  40. 40.There are 9 red beads and 4 yellow beads. How many beads are there in all?

Answer key

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

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