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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 827 · 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. 1.14 + 3 =
  2. 2.11 + ? = 14
  3. 3.Dev has 5 balloons and gets 12 balloons more. How many balloons does Dev have now?
  4. 4.? + 8 = 13
  5. 5.8 + 1 + 1 =
  6. 6.Nisha has 4 shells and gets 8 shells more. How many shells does Nisha have now?
  7. 7.There are 7 yellow balloons and 2 white balloons. How many balloons are there in all?
  8. 8.? + 2 = 17
  9. 9.There are 10 pink kites and 5 red kites. How many kites are there in all?
  10. 10.3 + 2 + 9 =
  11. 11.5 + 11 =
  12. 12.There are 4 red balloons and 4 blue balloons. How many balloons are there in all?
  13. 13.5 + 2 + 3 =
  14. 14.13 + 1 =
  15. 15.7 + 3 + 4 =
  16. 16.There are 6 white kites and 13 red kites. How many kites are there in all?
  17. 17.There are 5 yellow balls and 14 red balls. How many balls are there in all?
  18. 18.19 + 1 =
  19. 19.Pooja has 10 kites and gets 2 kites more. How many kites does Pooja have now?
  20. 20.2 + ? = 16
  21. 21.2 + ? = 5
  22. 22.4 + 5 + 11 =
  23. 23.Lakshmi has 14 flowers and gets 2 flowers more. How many flowers does Lakshmi have now?
  24. 24.Karan has 5 kites and gets 2 kites more. How many kites does Karan have now?
  25. 25.4 + 1 + 2 =
  26. 26.There are 2 blue balls and 14 green balls. How many balls are there in all?
  27. 27.There are 9 blue kites and 3 white kites. How many kites are there in all?
  28. 28.There are 6 white flowers and 10 green flowers. How many flowers are there in all?
  29. 29.8 + 5 + 2 =
  30. 30.There are 12 red kites and 5 blue kites. How many kites are there in all?
  31. 31.6 + 5 + 8 =
  32. 32.? + 1 = 8
  33. 33.15 + 5 =
  34. 34.16 + ? = 17
  35. 35.There are 3 yellow kites and 13 blue kites. How many kites are there in all?
  36. 36.Meera has 4 pencils and gets 13 pencils more. How many pencils does Meera have now?
  37. 37.8 + 1 + 3 =
  38. 38.2 + 3 =
  39. 39.Arjun has 15 bananas and gets 3 bananas more. How many bananas does Arjun have now?
  40. 40.4 + 7 + 4 =

Answer key

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

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