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CaseSingularPlural
Nominativeименительный · кто? что?носок носки the subject: who or what acts
Accusativeвинительный · кого? что?носок носки the direct object of the verb
Genitiveродительный · кого? чего?носка носков possession, absence, "of"-phrases
Dativeдательный · кому? чему?носку носкам the receiver: to or for someone
Instrumentalтворительный · кем? чем?носком носками the tool or companion: with, by
Prepositionalпредложный · о ком? о чём?носке носках location and topics: in, at, about

Носки is a masculine noun; the ending pattern above repeats across most masculine nouns, so every table you learn makes the next one cheaper.

Look up any other word in the Russian declension tool, see where носки ranks in the most common Russian words, or start from Russian cases explained if the table above is new territory. More vocabulary lives in Russian words by topic and Russian phrases.

12 forms is a table. Using them is a skill.

Slova drills носки and every word like it with typed case endings, checked letter by letter.

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