Compound Number Agreement

When forming numbers above 20 in Serbian, multi-word cardinal numbers do not trigger agreement based on the grand total. Instead, the grammar is governed strictly by the final numeral pronounced.

1. Compounds ending in 1 (21, 31, 101... except 11):
For regular countable nouns, the numeral један/једна/једно inflects for gender to match the noun. The noun appears in the nominative singular, and the predicate verb is in the 3rd person singular. In compound tenses like the past tense (перфекат), the active past participle agrees in gender with the subject noun (masculine -о, feminine -ла, neuter -ло):
• двадесет један студент је положио (twenty-one students passed).
• двадесет једна студенткиња је положила (twenty-one female students passed).
• двадесет једно дете је дошло (twenty-one children arrived).

Note for plural-only nouns (именице само у множини): With pluralia tantum nouns like врата (door/doors), новине (newspaper/newspapers), or панталоне (trousers), plural forms of један (једни / једне / једна) are used. The noun and the predicate verb remain in the plural: двадесет једна врата су отворена (twenty-one doors are open). Note that compounds ending in 2–4 cannot combine directly with plural-only nouns (forms like *двадесет двоја do not exist); standard Serbian uses periphrastic phrasing instead, such as двадесет два комада панталона / врата.

2. Compounds ending in 2, 3, 4 (22–24, 32–34, 102–104... except 12–14):
The numeral два inflects for gender: masculine/neuter два (e.g. двадесет два студента) vs. feminine две (Ijekavian: двије; e.g. двадесет две жене). The noun appears in the paucal form: for masculine and neuter nouns, this ending is -а; for regular feminine -а nouns, it is -е; however, feminine consonant-stem nouns take -и in the paucal (e.g. двадесет две речи, тридесет три ствари). Adjectives take the paucal ending (-а for masc/neut, -е for fem). In the past tense, traditional formal grammatical agreement uses the neuter plural/paucal participle ending -а for masculine and neuter subjects (двадесет два радника су дошла) and -е for feminine subjects. Additionally, semantic agreement in the masculine plural -и with masculine animate nouns (двадесет два радника су дошли) is fully accepted by modern standard normative grammars.

3. Compounds ending in 5–0 and the teens 11–14:
Because the numbers 11 through 14 (једанаест, дванаест, тринаест, четрнаест) end with the suffix -наест rather than free digits 1–4, they group with 5 and above. They require a генитив множине noun. In the past tense, strict grammatical agreement takes the 3rd person neuter singular (impersonal: је + -ло):
• сто четрнаест људи је дошло (one hundred fourteen people came).
While semantic plural agreement with animate nouns (сто четрнаест људи су дошли) is common in everyday speech, the neuter singular remains the strictly preferred normative standard in formal writing and language exams.

Everyday Usage Note: While older literary styles declined compound numerals through cases, modern spoken Serbian treats multi-digit numbers as indeclinable, keeping them in the nominative shape or rephrasing with prepositions (e.g. са двадесет два студента).