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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 117 · 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.Aarav has 11 books and gets 3 books more. How many books does Aarav have now?
  2. 2.19 + 1 =
  3. 3.There are 2 red balls and 13 white balls. How many balls are there in all?
  4. 4.16 + 2 =
  5. 5.9 + 2 =
  6. 6.Rohan has 2 marbles and gets 3 marbles more. How many marbles does Rohan have now?
  7. 7.11 + 1 =
  8. 8.11 + 2 =
  9. 9.There are 4 yellow balloons and 11 pink balloons. How many balloons are there in all?
  10. 10.There are 2 white balloons and 14 red balloons. How many balloons are there in all?
  11. 11.Ishaan has 12 shells and gets 4 shells more. How many shells does Ishaan have now?
  12. 12.There are 5 yellow crayons and 7 pink crayons. How many crayons are there in all?
  13. 13.1 + 18 =
  14. 14.15 + 4 =
  15. 15.3 + 5 + 11 =
  16. 16.4 + 7 + 6 =
  17. 17.There are 8 white crayons and 2 pink crayons. How many crayons are there in all?
  18. 18.8 + 11 =
  19. 19.Kabir has 6 flowers and gets 6 flowers more. How many flowers does Kabir have now?
  20. 20.1 + 6 =
  21. 21.There are 3 green flowers and 4 yellow flowers. How many flowers are there in all?
  22. 22.There are 7 red crayons and 9 blue crayons. How many crayons are there in all?
  23. 23.Nisha has 2 kites and gets 12 kites more. How many kites does Nisha have now?
  24. 24.There are 6 red flowers and 10 white flowers. How many flowers are there in all?
  25. 25.12 + 7 =
  26. 26.? + 2 = 10
  27. 27.3 + 4 + 1 =
  28. 28.Lakshmi has 7 pencils and gets 3 pencils more. How many pencils does Lakshmi have now?
  29. 29.? + 4 = 18
  30. 30.2 + 3 + 2 =
  31. 31.17 + 1 =
  32. 32.5 + 4 =
  33. 33.Lakshmi has 8 laddoos and gets 9 laddoos more. How many laddoos does Lakshmi have now?
  34. 34.3 + ? = 7
  35. 35.4 + 1 + 4 =
  36. 36.There are 9 green balls and 11 yellow balls. How many balls are there in all?
  37. 37.5 + 8 + 5 =
  38. 38.? + 2 = 7
  39. 39.1 + 8 =
  40. 40.There are 7 blue balls and 12 white balls. How many balls are there in all?

Answer key

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

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