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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 509 · 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.There are 3 red flowers and 4 white flowers. How many flowers are there in all?
  2. 2.5 + 4 =
  3. 3.6 + 11 =
  4. 4.Kavya has 13 bananas and gets 2 bananas more. How many bananas does Kavya have now?
  5. 5.8 + 8 + 3 =
  6. 6.1 + 2 + 9 =
  7. 7.There are 6 yellow crayons and 2 blue crayons. How many crayons are there in all?
  8. 8.8 + 7 + 5 =
  9. 9.There are 9 red balls and 2 white balls. How many balls are there in all?
  10. 10.There are 5 white balloons and 10 blue balloons. How many balloons are there in all?
  11. 11.There are 11 yellow kites and 9 red kites. How many kites are there in all?
  12. 12.6 + 7 =
  13. 13.Sneha has 4 shells and gets 1 shell more. How many shells does Sneha have now?
  14. 14.There are 8 yellow flowers and 11 red flowers. How many flowers are there in all?
  15. 15.? + 7 = 8
  16. 16.10 + 7 =
  17. 17.Ishaan has 15 books and gets 5 books more. How many books does Ishaan have now?
  18. 18.3 + ? = 5
  19. 19.There are 9 white crayons and 9 green crayons. How many crayons are there in all?
  20. 20.9 + ? = 10
  21. 21.4 + 7 =
  22. 22.Isha has 8 laddoos and gets 11 laddoos more. How many laddoos does Isha have now?
  23. 23.2 + ? = 16
  24. 24.There are 7 yellow kites and 4 white kites. How many kites are there in all?
  25. 25.Diya has 4 mangoes and gets 9 mangoes more. How many mangoes does Diya have now?
  26. 26.2 + 5 + 4 =
  27. 27.There are 3 yellow kites and 14 green kites. How many kites are there in all?
  28. 28.Arjun has 5 pencils and gets 6 pencils more. How many pencils does Arjun have now?
  29. 29.3 + 3 + 3 =
  30. 30.? + 2 = 13
  31. 31.5 + 14 =
  32. 32.5 + ? = 18
  33. 33.1 + 8 + 8 =
  34. 34.There are 3 green kites and 4 white kites. How many kites are there in all?
  35. 35.There are 9 pink balloons and 10 green balloons. How many balloons are there in all?
  36. 36.4 + 8 =
  37. 37.Dev has 13 marbles and gets 6 marbles more. How many marbles does Dev have now?
  38. 38.12 + 3 =
  39. 39.2 + 4 =
  40. 40.14 + 5 =

Answer key

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

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