| Nominativ | octingentensimus, octingentensimum, octingentensima, octingentensimum, octingentensimus, octingentensima | octingentensima, octingentensimae, octingentensimae, octingentensimi, octingentensima, octingentensimi |
| Genitiv | octingentensimae, octingentensimae, octingentensimi, octingentensimi, octingentensimi, octingentensimi | octingentensimarum, octingentensimorum, octingentensimorum, octingentensimarum, octingentensimorum, octingentensimorum |
| Dativ | octingentensimae, octingentensimo, octingentensimo, octingentensimae, octingentensimo, octingentensimo | octingentensimis, octingentensimis, octingentensimis, octingentensimis, octingentensimis, octingentensimis |
| Akkusativ | octingentensimum, octingentensimam, octingentensimam, octingentensimum, octingentensimum, octingentensimum | octingentensima, octingentensimas, octingentensimos, octingentensimas, octingentensimos, octingentensima |
| Ablativ | octingentensima, octingentensimo, octingentensimo, octingentensimo, octingentensimo, octingentensima | octingentensimis, octingentensimis, octingentensimis, octingentensimis, octingentensimis, octingentensimis |
| Vokativ | octingentensime, octingentensimum, octingentensima, octingentensime, octingentensimum, octingentensima | octingentensima, octingentensimae, octingentensimae, octingentensimi, octingentensima, octingentensimi |
