Declension table of ?ardhapañcadaśa

Masculine	Singular	Dual	Plural
Nominative	ardhapañcadaśaḥ	ardhapañcadaśau	ardhapañcadaśāḥ
Vocative	ardhapañcadaśa	ardhapañcadaśau	ardhapañcadaśāḥ
Accusative	ardhapañcadaśam	ardhapañcadaśau	ardhapañcadaśān
Instrumental	ardhapañcadaśena	ardhapañcadaśābhyām	ardhapañcadaśaiḥ ardhapañcadaśebhiḥ
Dative	ardhapañcadaśāya	ardhapañcadaśābhyām	ardhapañcadaśebhyaḥ
Ablative	ardhapañcadaśāt	ardhapañcadaśābhyām	ardhapañcadaśebhyaḥ
Genitive	ardhapañcadaśasya	ardhapañcadaśayoḥ	ardhapañcadaśānām
Locative	ardhapañcadaśe	ardhapañcadaśayoḥ	ardhapañcadaśeṣu

Compound ardhapañcadaśa -

Adverb -ardhapañcadaśam -ardhapañcadaśāt