In Russian, the form of a noun changes depending on the number that comes before it. The language groups numbers into three distinct categories based on their final digit. In this deck, you will learn how to choose the right noun form after any number from one to one hundred.

When a number ends in one, Russian uses the nominative singular, which is the dictionary form of the noun. The word for one changes to match the noun's gender: 'один' for masculine, 'одна' for feminine, and 'одно' for neuter. For example, 'один стол' means 'one table', 'одна книга' means 'one book', and 'одно окно' means 'one window'.

Compound numbers ending in one also take the nominative singular. For example, twenty-one roubles is 'двадцать один рубль', and thirty-one female students is 'тридцать одна студентка'. In whole sentences, we can say 'Дайте один билет' for 'Give one ticket', and 'У нас двадцать один студент' for 'We have twenty-one students'.