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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 942 · 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. 1.4 + 13 =
  2. 2.15 + 5 =
  3. 3.Lakshmi has 7 flowers and gets 9 flowers more. How many flowers does Lakshmi have now?
  4. 4.Nisha has 3 books and gets 11 books more. How many books does Nisha have now?
  5. 5.2 + ? = 13
  6. 6.2 + 1 + 16 =
  7. 7.1 + ? = 3
  8. 8.15 + 1 =
  9. 9.13 + 4 =
  10. 10.3 + 3 + 13 =
  11. 11.7 + 5 + 1 =
  12. 12.2 + 2 + 2 =
  13. 13.2 + 2 + 1 =
  14. 14.5 + 7 + 5 =
  15. 15.Ananya has 7 crayons and gets 2 crayons more. How many crayons does Ananya have now?
  16. 16.? + 6 = 16
  17. 17.3 + ? = 14
  18. 18.? + 6 = 8
  19. 19.There are 5 pink balls and 13 yellow balls. How many balls are there in all?
  20. 20.4 + 5 + 2 =
  21. 21.2 + 4 + 8 =
  22. 22.4 + ? = 19
  23. 23.? + 4 = 18
  24. 24.9 + 11 =
  25. 25.Arjun has 14 shells and gets 6 shells more. How many shells does Arjun have now?
  26. 26.1 + 1 + 17 =
  27. 27.Isha has 14 crayons and gets 5 crayons more. How many crayons does Isha have now?
  28. 28.8 + 8 + 1 =
  29. 29.5 + 6 + 2 =
  30. 30.Lakshmi has 2 bananas and gets 17 bananas more. How many bananas does Lakshmi have now?
  31. 31.2 + 18 =
  32. 32.? + 2 = 10
  33. 33.12 + 6 =
  34. 34.There are 12 blue crayons and 3 pink crayons. How many crayons are there in all?
  35. 35.Ishaan has 3 pencils and gets 4 pencils more. How many pencils does Ishaan have now?
  36. 36.13 + ? = 17
  37. 37.Isha has 11 books and gets 9 books more. How many books does Isha have now?
  38. 38.There are 7 blue kites and 12 red kites. How many kites are there in all?
  39. 39.? + 7 = 14
  40. 40.? + 2 = 14

Answer key

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

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