| Fundamentalsatz | Nominativ, Singular | nominative case, singular | |
| Fundamentalsatze | Genitiv, Singular | genitive case, singular | |
| Fundamentalsatzen | Dativ, Singular | dative case, singular | |
| Fundamentalsatz(e)s | Akkusativ, Singular | accusative case, singular | |
| Fundamentalsatzer | Nominativ, Plural | nominative case, plural | |
| Fundamentalsatzern | Genitiv, Plural | genitive case, plural | |
| Fundamentalsatzn | Dativ, Plural | dative case, plural |