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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 359 · 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 7 blue flowers and 13 green flowers. How many flowers are there in all?
  2. 2.3 + 2 =
  3. 3.1 + 2 + 8 =
  4. 4.6 + ? = 16
  5. 5.Rahul has 15 marbles and gets 1 marble more. How many marbles does Rahul have now?
  6. 6.There are 12 yellow balls and 6 white balls. How many balls are there in all?
  7. 7.5 + 3 + 1 =
  8. 8.7 + 8 + 2 =
  9. 9.Nisha has 11 pencils and gets 1 pencil more. How many pencils does Nisha have now?
  10. 10.1 + 8 + 1 =
  11. 11.? + 4 = 9
  12. 12.2 + ? = 8
  13. 13.3 + 16 =
  14. 14.Pooja has 3 mangoes and gets 8 mangoes more. How many mangoes does Pooja have now?
  15. 15.12 + 1 =
  16. 16.There are 11 yellow flowers and 6 blue flowers. How many flowers are there in all?
  17. 17.5 + ? = 15
  18. 18.9 + 8 =
  19. 19.1 + ? = 16
  20. 20.1 + ? = 7
  21. 21.There are 4 red crayons and 3 blue crayons. How many crayons are there in all?
  22. 22.Kavya has 15 balls and gets 2 balls more. How many balls does Kavya have now?
  23. 23.13 + 7 =
  24. 24.There are 4 yellow balloons and 7 white balloons. How many balloons are there in all?
  25. 25.There are 3 blue flowers and 3 white flowers. How many flowers are there in all?
  26. 26.Riya has 6 balls and gets 12 balls more. How many balls does Riya have now?
  27. 27.There are 3 yellow flowers and 5 white flowers. How many flowers are there in all?
  28. 28.Arjun has 13 pencils and gets 1 pencil more. How many pencils does Arjun have now?
  29. 29.Pooja has 14 bananas and gets 6 bananas more. How many bananas does Pooja have now?
  30. 30.There are 10 white balls and 5 blue balls. How many balls are there in all?
  31. 31.1 + 8 + 6 =
  32. 32.? + 13 = 14
  33. 33.There are 6 pink balloons and 11 green balloons. How many balloons are there in all?
  34. 34.9 + 1 =
  35. 35.There are 10 yellow kites and 8 red kites. How many kites are there in all?
  36. 36.4 + ? = 8
  37. 37.? + 2 = 7
  38. 38.Aarav has 8 marbles and gets 9 marbles more. How many marbles does Aarav have now?
  39. 39.8 + 3 =
  40. 40.There are 10 white flowers and 7 blue flowers. How many flowers are there in all?

Answer key

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

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