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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 629 · 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.Arjun has 8 mangoes and gets 3 mangoes more. How many mangoes does Arjun have now?
  2. 2.Arjun has 10 laddoos and gets 7 laddoos more. How many laddoos does Arjun have now?
  3. 3.There are 12 white crayons and 3 green crayons. How many crayons are there in all?
  4. 4.8 + 8 + 3 =
  5. 5.5 + 1 =
  6. 6.Rahul has 7 books and gets 2 books more. How many books does Rahul have now?
  7. 7.Isha has 2 books and gets 6 books more. How many books does Isha have now?
  8. 8.3 + 16 =
  9. 9.Nisha has 4 crayons and gets 16 crayons more. How many crayons does Nisha have now?
  10. 10.7 + 3 + 3 =
  11. 11.8 + ? = 10
  12. 12.There are 6 yellow flowers and 5 blue flowers. How many flowers are there in all?
  13. 13.8 + 8 =
  14. 14.There are 12 blue flowers and 8 green flowers. How many flowers are there in all?
  15. 15.There are 11 white balloons and 8 red balloons. How many balloons are there in all?
  16. 16.There are 8 red balloons and 4 green balloons. How many balloons are there in all?
  17. 17.7 + 5 =
  18. 18.9 + ? = 20
  19. 19.There are 11 red kites and 2 pink kites. How many kites are there in all?
  20. 20.There are 12 white kites and 5 pink kites. How many kites are there in all?
  21. 21.8 + ? = 18
  22. 22.? + 13 = 15
  23. 23.8 + 7 + 2 =
  24. 24.1 + 5 + 12 =
  25. 25.Aarav has 14 pencils and gets 6 pencils more. How many pencils does Aarav have now?
  26. 26.4 + 1 + 11 =
  27. 27.9 + ? = 10
  28. 28.4 + 5 =
  29. 29.There are 11 white balls and 7 green balls. How many balls are there in all?
  30. 30.7 + 2 + 7 =
  31. 31.12 + 2 =
  32. 32.There are 8 green beads and 8 pink beads. How many beads are there in all?
  33. 33.There are 3 pink crayons and 5 blue crayons. How many crayons are there in all?
  34. 34.There are 7 green balls and 9 yellow balls. How many balls are there in all?
  35. 35.9 + 6 =
  36. 36.16 + 4 =
  37. 37.8 + 2 + 5 =
  38. 38.3 + ? = 10
  39. 39.3 + ? = 8
  40. 40.12 + 6 =

Answer key

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

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