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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 221 · 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. 1.1 + ? = 4
  2. 2.There are 6 red kites and 14 yellow kites. How many kites are there in all?
  3. 3.4 + ? = 11
  4. 4.There are 2 yellow balloons and 16 blue balloons. How many balloons are there in all?
  5. 5.3 + ? = 6
  6. 6.Aarav has 12 balls and gets 6 balls more. How many balls does Aarav have now?
  7. 7.Priya has 7 pencils and gets 4 pencils more. How many pencils does Priya have now?
  8. 8.There are 5 red balloons and 11 pink balloons. How many balloons are there in all?
  9. 9.11 + 6 =
  10. 10.1 + 11 =
  11. 11.3 + 5 + 5 =
  12. 12.There are 12 white balloons and 2 green balloons. How many balloons are there in all?
  13. 13.2 + ? = 4
  14. 14.15 + 3 =
  15. 15.Farhan has 5 mangoes and gets 1 mango more. How many mangoes does Farhan have now?
  16. 16.16 + 2 =
  17. 17.There are 10 green crayons and 2 blue crayons. How many crayons are there in all?
  18. 18.1 + 3 + 9 =
  19. 19.? + 1 = 13
  20. 20.Saanvi has 2 mangoes and gets 8 mangoes more. How many mangoes does Saanvi have now?
  21. 21.? + 9 = 10
  22. 22.3 + 6 + 3 =
  23. 23.Aditya has 7 balls and gets 11 balls more. How many balls does Aditya have now?
  24. 24.7 + ? = 19
  25. 25.6 + 1 =
  26. 26.There are 12 pink flowers and 8 blue flowers. How many flowers are there in all?
  27. 27.Ananya has 14 books and gets 2 books more. How many books does Ananya have now?
  28. 28.There are 4 yellow balls and 4 green balls. How many balls are there in all?
  29. 29.3 + 5 =
  30. 30.4 + 16 =
  31. 31.15 + 4 =
  32. 32.18 + 1 =
  33. 33.Nisha has 4 kites and gets 8 kites more. How many kites does Nisha have now?
  34. 34.2 + 2 + 11 =
  35. 35.2 + 17 =
  36. 36.? + 5 = 12
  37. 37.Ananya has 6 pencils and gets 12 pencils more. How many pencils does Ananya have now?
  38. 38.Isha has 2 marbles and gets 16 marbles more. How many marbles does Isha have now?
  39. 39.4 + ? = 14
  40. 40.7 + 6 + 4 =

Answer key

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

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