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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 376 · 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.Lakshmi has 12 books and gets 3 books more. How many books does Lakshmi have now?
  2. 2.14 + 1 =
  3. 3.5 + 2 + 8 =
  4. 4.4 + 5 =
  5. 5.14 + 6 =
  6. 6.There are 9 blue balls and 5 pink balls. How many balls are there in all?
  7. 7.? + 12 = 19
  8. 8.There are 2 red flowers and 11 blue flowers. How many flowers are there in all?
  9. 9.There are 7 red crayons and 10 yellow crayons. How many crayons are there in all?
  10. 10.Nisha has 8 crayons and gets 2 crayons more. How many crayons does Nisha have now?
  11. 11.17 + 2 =
  12. 12.5 + 6 =
  13. 13.7 + 1 + 3 =
  14. 14.1 + 8 =
  15. 15.4 + ? = 19
  16. 16.Vivaan has 11 bananas and gets 9 bananas more. How many bananas does Vivaan have now?
  17. 17.8 + 7 + 5 =
  18. 18.? + 8 = 13
  19. 19.8 + ? = 9
  20. 20.2 + 2 + 9 =
  21. 21.Isha has 12 laddoos and gets 5 laddoos more. How many laddoos does Isha have now?
  22. 22.5 + 4 =
  23. 23.2 + 5 + 1 =
  24. 24.There are 6 pink kites and 8 red kites. How many kites are there in all?
  25. 25.13 + 5 =
  26. 26.2 + 8 + 2 =
  27. 27.4 + 8 + 5 =
  28. 28.5 + 5 + 8 =
  29. 29.11 + 9 =
  30. 30.Ananya has 4 marbles and gets 9 marbles more. How many marbles does Ananya have now?
  31. 31.3 + 5 + 10 =
  32. 32.There are 4 blue beads and 7 white beads. How many beads are there in all?
  33. 33.15 + 5 =
  34. 34.2 + 18 =
  35. 35.? + 4 = 8
  36. 36.There are 11 white balls and 9 red balls. How many balls are there in all?
  37. 37.Kabir has 6 pencils and gets 8 pencils more. How many pencils does Kabir have now?
  38. 38.10 + 5 =
  39. 39.5 + 8 =
  40. 40.8 + 7 =

Answer key

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

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