+--------+-----------------------------+----------------------+
| | MASC FEM. NEUT. | MASC. & FEM. NEUT. |
| _Nom._ | duo duae duo | trēs tria |
| _Gen._ | duōrum duārum duōrum | trium trium |
| _Dat._ | duōbus duābus duōbus | tribus tribus |
| _Acc._ | duo or duōs duās duo | trēs or trīs tria |
| _Abl._ | duōbus duābus duōbus | tribus tribus |
+--------+-----------------------------+----------------------+
640. In dramatic verse, #du͡o#, &c., is common. In the genitive plural,
#duo# sometimes has #duū̆m# (462). #ambō#, _both_, is declined like
#duo#, but has #-ō# in the nominative and accusative, and only #ambōrum#
and #ambārum# in the genitive plural. For the forms #duo#, #ambō#, see
415; #duōbus#, #duābus#, 464, 442.
641. Hundreds are declined like the plural of #bonus# (613): as,
#ducentī#, #ducentae#, #ducenta#, _two hundred_, G. #ducentōrum# or
#ducentū̆m# (462), &c.
642. The adjective #mīlle#, _thousand_, is not declined. The substantive
has in the singular only N. Ac. Ab. #mīlle#, or Ab. #mīllī#; plural: N.
and Ac. #mīllia# (#mīlia#), G. #mīllium# (#mīlium#), D. and Ab.
#mīllibus# (#mīlibus#).
643. Ordinals, as #prīmus#, _first_, and distributives, as #bīnī#, _two
each_, are declined like #bonus# (613). But distributives seldom have a
singular, and often have the genitive plural #-ū̆m# (462): as, #bīnū̆m#.