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1-101ordinal abbreviation and complete writing.
1 first abbreviation 1st

2 seconds 2 seconds

Third, third, third

Fourth, fourth.

5 fifth fifth

6 7 8 9 10 1 1 all add th after their own words.

For example, 9nineth11even, and as for abbreviations, it is also added with th, such as 9 9.

1 1

12 Twelfth 12, be sure to remember that this word is changed to F instead of directly adding th after the word 12.

13th session 13

14 After the fourteenth 14, it is also a number plus th.

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20 Twentieth

2 1 21st, be sure to remember that starting from 2 1, the first number is followed by the ordinal number 21st.

22 22nd session

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Thirtieth, change the original digital word y into ie and then add th.

3 1 article 31

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40 40th session

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50 fiftieth

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