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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 132 · 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 7 pencils and gets 2 pencils more. How many pencils does Aarav have now?
  2. 2.2 + 5 + 7 =
  3. 3.There are 9 blue balls and 7 red balls. How many balls are there in all?
  4. 4.1 + ? = 12
  5. 5.There are 8 yellow kites and 5 blue kites. How many kites are there in all?
  6. 6.There are 3 blue flowers and 6 red flowers. How many flowers are there in all?
  7. 7.19 + 1 =
  8. 8.? + 4 = 15
  9. 9.Lakshmi has 3 books and gets 12 books more. How many books does Lakshmi have now?
  10. 10.10 + 7 =
  11. 11.8 + 7 + 5 =
  12. 12.12 + 8 =
  13. 13.Manav has 5 shells and gets 11 shells more. How many shells does Manav have now?
  14. 14.8 + 12 =
  15. 15.16 + 4 =
  16. 16.2 + 2 + 2 =
  17. 17.There are 11 green balls and 8 red balls. How many balls are there in all?
  18. 18.Farhan has 2 pencils and gets 3 pencils more. How many pencils does Farhan have now?
  19. 19.1 + 17 =
  20. 20.? + 1 = 4
  21. 21.15 + 5 =
  22. 22.Lakshmi has 8 balls and gets 9 balls more. How many balls does Lakshmi have now?
  23. 23.2 + ? = 9
  24. 24.There are 12 pink kites and 5 yellow kites. How many kites are there in all?
  25. 25.Nisha has 3 mangoes and gets 16 mangoes more. How many mangoes does Nisha have now?
  26. 26.Ananya has 3 pencils and gets 12 pencils more. How many pencils does Ananya have now?
  27. 27.There are 9 red balls and 10 pink balls. How many balls are there in all?
  28. 28.There are 2 red balls and 6 white balls. How many balls are there in all?
  29. 29.2 + 2 + 6 =
  30. 30.9 + 3 =
  31. 31.2 + 4 + 13 =
  32. 32.11 + 2 =
  33. 33.2 + 7 + 5 =
  34. 34.There are 10 red kites and 6 white kites. How many kites are there in all?
  35. 35.There are 5 green balls and 3 red balls. How many balls are there in all?
  36. 36.12 + 1 =
  37. 37.Sneha has 9 pencils and gets 2 pencils more. How many pencils does Sneha have now?
  38. 38.Sneha has 8 crayons and gets 6 crayons more. How many crayons does Sneha have now?
  39. 39.1 + 7 + 1 =
  40. 40.3 + 12 =

Answer key

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

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