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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 223 · 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. 1.5 + 13 =
  2. 2.13 + 5 =
  3. 3.8 + 1 =
  4. 4.2 + ? = 4
  5. 5.There are 4 red balloons and 4 yellow balloons. How many balloons are there in all?
  6. 6.Saanvi has 7 marbles and gets 10 marbles more. How many marbles does Saanvi have now?
  7. 7.3 + 4 =
  8. 8.? + 9 = 13
  9. 9.Dev has 2 laddoos and gets 11 laddoos more. How many laddoos does Dev have now?
  10. 10.There are 4 yellow flowers and 12 pink flowers. How many flowers are there in all?
  11. 11.? + 3 = 5
  12. 12.Lakshmi has 10 bananas and gets 10 bananas more. How many bananas does Lakshmi have now?
  13. 13.There are 3 yellow balls and 2 blue balls. How many balls are there in all?
  14. 14.There are 10 red kites and 8 yellow kites. How many kites are there in all?
  15. 15.6 + ? = 10
  16. 16.4 + 4 + 7 =
  17. 17.There are 11 green crayons and 8 yellow crayons. How many crayons are there in all?
  18. 18.13 + 4 =
  19. 19.There are 10 yellow balls and 4 pink balls. How many balls are there in all?
  20. 20.6 + 5 + 7 =
  21. 21.16 + 2 =
  22. 22.Gurpreet has 4 pencils and gets 4 pencils more. How many pencils does Gurpreet have now?
  23. 23.Karan has 12 flowers and gets 3 flowers more. How many flowers does Karan have now?
  24. 24.16 + ? = 18
  25. 25.3 + 5 + 9 =
  26. 26.5 + 5 + 2 =
  27. 27.10 + 6 =
  28. 28.1 + 6 + 10 =
  29. 29.There are 7 red kites and 4 white kites. How many kites are there in all?
  30. 30.9 + 1 =
  31. 31.13 + 2 =
  32. 32.2 + ? = 6
  33. 33.There are 11 pink kites and 2 blue kites. How many kites are there in all?
  34. 34.? + 5 = 8
  35. 35.? + 1 = 5
  36. 36.3 + 8 + 3 =
  37. 37.There are 11 red balls and 3 blue balls. How many balls are there in all?
  38. 38.5 + 9 =
  39. 39.7 + 6 + 1 =
  40. 40.6 + 7 =

Answer key

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

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