Visual Guide: How to Write and Spell Numbers 21 Through 30 in English Correctly
By Elena Rostova
Navigating both cardinal and ordinal forms requires understanding how suffixes alter root words. The transition from the cardinal "thirty" to the thirtieth ordinal number demands changing the terminal -y into an -ie- diphthong before affixing the standard -th ending.
| Numeral | Cardinal Form | Ordinal Form | Standard IPA Phonetics |
|---|---|---|---|
| 21 | twenty-one | twenty-first | /ˌtwɛntiˈwʌn/ |
| 22 | twenty-two | twenty-second | /ˌtwɛntiˈtuː/ |
| 23 | twenty-three | twenty-third | /ˌtwɛntiˈθriː/ |
| 24 | twenty-four | twenty-fourth | /ˌtwɛntiˈfɔːr/ |
| 25 | twenty-five | twenty-fifth | /ˌtwɛntiˈfaɪv/ |
| 26 | twenty-six | twenty-sixth | /ˌtwɛntiˈsɪks/ |
| 27 | twenty-seven | twenty-seventh | /ˌtwɛntiˈsɛvən/ |
| 28 | twenty-eight | twenty-eighth | /ˌtwɛntiˈeɪt/ |
| 29 | twenty-nine | twenty-ninth | /ˌtwɛntiˈnaɪn/ |
| 30 | thirty | thirtieth | /ˈθɜːrti/ |
Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.
Tags:
30 en inglés
