Numbers 1-20 in Russian

In Brief

Russian uses three basic noun patterns after numbers: 1 + nominative singular (один дом), 2-4 + genitive singular (два дома), and 5-20 + genitive plural (пять домов). Один changes for masculine, feminine, and neuter nouns, while два has the feminine form две. Numbers ending in 11-14 belong to the 5-20 group: двенадцать книг.

Overview

Numbers from 1 to 20 appear everywhere: in prices, ages, addresses, phone numbers, time, and everyday quantities. Learning the words themselves is only half the job. Russian also changes the noun after a number, where English normally has just a singular/plural choice: “one book,” “two books,” and “five books” become одна книга, две книги, and пять книг.

This is an A1 topic, but it introduces two central parts of Russian grammar. A noun is a word for a person, place, thing, or idea, such as студент (“student”), книга (“book”), or окно (“window”). A case is a form of a noun that helps show its role or relationship in a sentence. After Russian numbers, the noun's case and number depend on the numeral.

For now, concentrate on ordinary counting phrases in their basic form. The three-way rule—1, 2-4, and 5-20—will let you produce a large number of useful phrases correctly. Later sections explain what changes when the phrase has another grammatical role.

How It Works

The number words

The forms from 11 to 19 share the historical element -надцать. It is useful to learn them as complete words rather than trying to build them while speaking.

Number	Russian	Number	Russian
1	один / одна / одно	11	одиннадцать
2	два / две	12	двенадцать
3	три	13	тринадцать
4	четыре	14	четырнадцать
5	пять	15	пятнадцать
6	шесть	16	шестнадцать
7	семь	17	семнадцать
8	восемь	18	восемнадцать
9	девять	19	девятнадцать
10	десять	20	двадцать

Notice the spelling of одиннадцать, with нн. Also distinguish двенадцать (12), девятнадцать (19), and двадцать (20); their similar shapes make them easy to confuse at first.

The core counting pattern

The basic rule applies when a quantity phrase is in the nominative case (the usual dictionary form and often the form of a sentence's subject). It also applies to many basic phrases used as direct objects, especially with things rather than people.

Number	Required noun form	“house”	“book”	“window”
1	nominative singular	один дом	одна книга	одно окно
2, 3, 4	genitive singular	два дома	две книги	два окна
5-20	genitive plural	пять домов	пять книг	пять окон

The genitive is a case used in several situations, including quantities. Its English translation does not need the word “of”: три книги simply means “three books.” Learn the noun and number as a phrase rather than mentally inserting “of.”

One agrees with the noun

Один behaves much like an adjective. It agrees with the noun's grammatical gender—its masculine, feminine, or neuter noun class.

Gender	Form of 1	Example	English
Masculine	один	один билет	one ticket
Feminine	одна	одна минута	one minute
Neuter	одно	одно письмо	one letter

There is also the plural form одни, used with nouns that normally occur only in the plural, such as одни часы (“one watch/clock”), and in some special meanings. Beginners can first master один, одна, and одно.

Two has two gender forms

Use два with masculine and neuter nouns, but две with feminine nouns. The noun itself is genitive singular in the basic pattern.

Noun type	Form of 2	Example	English
Masculine	два	два студента	two students
Feminine	две	две студентки	two female students
Neuter	два	два места	two places

The numbers три and четыре do not change for gender: три дома, три книги, три окна.

Five through twenty

After 5-20, use the genitive plural: пять рублей, десять минут, двадцать вопросов. This includes 11, 12, 13, and 14. Their final digits do not trigger the patterns for 1-4.

Number phrase	Noun form	English
один студент	nominative singular	one student
два студента	genitive singular	two students
пять студентов	genitive plural	five students
одиннадцать студентов	genitive plural	eleven students
четырнадцать студентов	genitive plural	fourteen students

English-speaking learners often look only at the last digit. That approach becomes useful with larger numbers, but 11-14 are the crucial exception: the “teen” value wins.

Common everyday noun patterns

Some high-frequency words have forms worth memorising as complete sets.

Meaning	After 1	After 2-4	After 5-20
year(s) of age	год	года	лет
hour(s)	час	часа	часов
person/people	человек	человека	человек
ruble(s)	рубль	рубля	рублей
day(s)	день	дня	дней

Thus age is Мне один год, Мне три года, but Мне пять лет. The irregular-looking лет is normal in age and duration expressions and should be learned early.

Examples in Context

Russian	English	Note
У нас один дом.	We have one house.	Masculine один + nominative singular
На столе одна книга.	There is one book on the table.	Feminine одна
Здесь одно окно.	There is one window here.	Neuter одно
Мне нужны два билета.	I need two tickets.	Masculine два + genitive singular
Я купила две книги.	I bought two books.	Feminine две + genitive singular
В комнате три окна.	There are three windows in the room.	Три + genitive singular
У Анны четыре брата.	Anna has four brothers.	Четыре + genitive singular
В группе пять студентов.	There are five students in the group.	Genitive plural after 5
Автобус придёт через шесть минут.	The bus will arrive in six minutes.	Genitive plural after 6
Мне десять лет.	I am ten years old.	Age uses лет after 5-20
В классе одиннадцать человек.	There are eleven people in the class.	Special plural quantity form человек
У нас двенадцать вопросов.	We have twelve questions.	12 takes genitive plural
Магазин работает двадцать часов.	The shop is open for twenty hours.	20 takes genitive plural
Запишите номер: восемь, три, один, пять.	Write down the number: eight, three, one, five.	Digits are said separately; no noun follows

Common Mistakes

Using an ordinary plural after 2-4

• Wrong: два домы
• Right: два дома
• Why: After 2, 3, and 4, the basic counting pattern requires the genitive singular, not an ordinary nominative plural.

Forgetting the feminine forms

• Wrong: один книга, два книги
• Right: одна книга, две книги
• Why: Use одна for “one” with a feminine noun and две for “two.” The ending of книги is correct after две, but the numeral must agree too.

Using a singular noun after 5

• Wrong: пять книга
• Right: пять книг
• Why: Numbers 5-20 require the genitive plural in the basic pattern.

Treating 11-14 like numbers ending in 1-4

• Wrong: двенадцать книги
• Right: двенадцать книг
• Why: All numbers from 11 through 14 take the 5-20 pattern. With larger compound numbers, 11-14 remain an important exception too.

Translating age word for word from English

• Wrong: Я десять лет.
• Right: Мне десять лет.
• Why: Russian expresses age as “to me [are] ten years.” Мне means “to me”; it is not built with the direct equivalent of “I am.”

Always leaving animate nouns unchanged as direct objects

• Wrong: Я вижу два студента is correct, but assuming every numeral phrase behaves this way leads to errors such as Я вижу два студентки.
• Right: Я вижу двух студенток.
• Why: With animate people and animals, direct-object forms can change. This is beyond the core counting rule; recognise it now and study numeral declension later.

Usage Notes

In careful counting, the standalone form for 1 is normally один. When reading phone numbers, room numbers, passwords, and codes, speakers usually say digits separately: пять, ноль, два. A string such as 12 may instead be read as двенадцать when it functions as one number.

Stress matters for comprehension. Useful stressed forms include оди́н, одна́, одно́, два, две, четы́ре, во́семь, оди́ннадцать, четы́рнадцать, and два́дцать. Russian spelling does not normally show stress, so record it when learning a new word and listen to full phrases rather than isolated forms only.

With clock time, the same noun pattern appears: Сейчас час (“It is one o'clock”), два часа, пять часов. In telling time, Russian normally uses час, not один час, for one o'clock. Age has its own frequent set: один год, два года, пять лет.

Beyond the Basics / Advanced Use

You do not need to master the following details at A1, but they explain forms you will meet later.

The rule belongs to the whole number phrase

The beginner rule describes the nominative counting pattern. When a preposition or sentence role requires another case, the numeral itself may decline (change form), and the noun generally appears in the corresponding plural case:

• с одним другом — “with one friend”
• с двумя друзьями — “with two friends”
• о пяти студентах — “about five students”
• без трёх рублей — “without three rubles / three rubles short”

This is why “2-4 always take genitive singular” is a useful beginner rule, not a rule for every possible sentence. Full numeral declension is a later topic.

Animate direct objects

Russian distinguishes animate nouns (people and animals) from inanimate nouns in parts of the accusative case—the case commonly used for a direct object, the person or thing directly affected by an action. Compare:

• Я вижу два дома. — “I see two houses.”
• Я вижу двух студентов. — “I see two students.”
• Я вижу пять домов. — “I see five houses.”
• Я вижу пять студентов. — “I see five students.”

The special form двух appears with an animate direct object. Do not let this detail interrupt basic counting practice, but avoid assuming that numeral phrases never change.

Collective numerals

Russian also has collective forms such as двое, трое, and четверо. They occur with certain groups of people, young animals, and plural-only nouns: двое детей (“two children”), трое друзей (“three friends”). Their use is restricted and has stylistic nuances, so ordinary cardinal numbers remain the best starting point.

Numbers used as labels

A number that identifies rather than counts may not control a noun in the usual way. In автобус номер пять (“bus number five”), пять is the label. Dates and positions often use ordinal numbers—forms meaning “first,” “second,” and so on—rather than the cardinal numbers taught here.

Practice Tips

1. Build three-form noun sets. Choose ten useful nouns and say each with 1, 2, and 5: один билет, два билета, пять билетов. Include masculine, feminine, and neuter nouns.
2. Practise random numbers, not only the sequence. Counting from 1 to 20 can become a memorised chant. Use shuffled cards or read prices and room numbers aloud so that you can retrieve each number independently.
3. Learn everyday chunks. Rehearse два часа, пять минут, три года, and десять лет as whole phrases. This trains both the numeral and the noun form at once.

Related Concepts

• Next step: Numbers 20-1000+ — extend the same patterns to compound numbers, hundreds, and thousands.
• Next step: Time Expressions — use numbers for clock time, schedules, days, and dates.
• Later topic: Ordinal Numbers — learn “first,” “second,” and other forms used for order and dates.