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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 407 · 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. 1.11 + ? = 14
  2. 2.1 + 8 + 11 =
  3. 3.There are 4 yellow beads and 3 white beads. How many beads are there in all?
  4. 4.There are 9 pink beads and 11 red beads. How many beads are there in all?
  5. 5.5 + 8 + 6 =
  6. 6.14 + 4 =
  7. 7.Vivaan has 7 flowers and gets 5 flowers more. How many flowers does Vivaan have now?
  8. 8.2 + ? = 18
  9. 9.14 + 1 =
  10. 10.12 + 2 =
  11. 11.There are 2 red beads and 9 green beads. How many beads are there in all?
  12. 12.Dev has 2 books and gets 10 books more. How many books does Dev have now?
  13. 13.Vivaan has 8 books and gets 7 books more. How many books does Vivaan have now?
  14. 14.Ishaan has 15 shells and gets 1 shell more. How many shells does Ishaan have now?
  15. 15.6 + 4 =
  16. 16.There are 6 yellow crayons and 5 red crayons. How many crayons are there in all?
  17. 17.Kabir has 12 crayons and gets 2 crayons more. How many crayons does Kabir have now?
  18. 18.There are 4 blue beads and 6 red beads. How many beads are there in all?
  19. 19.Rohan has 11 pencils and gets 2 pencils more. How many pencils does Rohan have now?
  20. 20.7 + 3 + 3 =
  21. 21.There are 7 green flowers and 12 blue flowers. How many flowers are there in all?
  22. 22.1 + 5 + 14 =
  23. 23.Dev has 3 pencils and gets 3 pencils more. How many pencils does Dev have now?
  24. 24.? + 2 = 3
  25. 25.15 + 2 =
  26. 26.Rahul has 8 mangoes and gets 4 mangoes more. How many mangoes does Rahul have now?
  27. 27.5 + ? = 11
  28. 28.5 + 14 =
  29. 29.Rahul has 2 mangoes and gets 18 mangoes more. How many mangoes does Rahul have now?
  30. 30.? + 1 = 4
  31. 31.7 + 6 + 3 =
  32. 32.There are 11 yellow balloons and 7 pink balloons. How many balloons are there in all?
  33. 33.5 + 2 + 4 =
  34. 34.Joseph has 2 pencils and gets 3 pencils more. How many pencils does Joseph have now?
  35. 35.Lakshmi has 8 laddoos and gets 12 laddoos more. How many laddoos does Lakshmi have now?
  36. 36.15 + 3 =
  37. 37.4 + 3 + 11 =
  38. 38.15 + 4 =
  39. 39.? + 5 = 19
  40. 40.There are 2 blue beads and 17 red beads. How many beads are there in all?

Answer key

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

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