| Rechenproblem | Nominativ, Singular | nominative case, singular | |
| Rechenproblem | Genitiv, Singular | genitive case, singular | |
| Rechenproblem | Dativ, Singular | dative case, singular | |
| Rechenproblem | Akkusativ, Singular | accusative case, singular | |
| Rechenproblemen | Nominativ, Plural | nominative case, plural | |
| Rechenproblemen | Genitiv, Plural | genitive case, plural | |
| Rechenproblemen | Dativ, Plural | dative case, plural | |
| Rechenproblemen | Akkusativ, Plural | accusative case, plural |