chuyển các số đếm sau sang dạng số thứ tự

1. three ⇒ _____________________

2. nine ⇒ _____________________

3. twenty ⇒ _____________________

4. six ⇒ _____________________

5. twelve ⇒ _____________________

6. one ⇒ _____________________

7. thirty-one ⇒ _____________________

8. seventeen ⇒ _____________________

9. two ⇒ _____________________

10. twenty-three ⇒ _____________________

11. fifteen ⇒ _____________________

12. eight ⇒ _____________________

13. five ⇒ _____________________

14. eleven ⇒ _____________________

15. twenty-four ⇒ _____________________

16. ten ⇒ _____________________

17. seven ⇒ _____________________

18. twenty-eight ⇒ _____________________

19. fifteen ⇒ _____________________

20. thirteen ⇒ _____________________