A1 Numbers 4 min read Easy

Russian Numbers 11-100: Counting and Prices

Russian numbers 11-100 are logical building blocks using specific suffixes like lego pieces for easy counting.
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Grammar Rule in 30 Seconds

Russian numbers 11-19 end in '-надцать', while 20-90 use suffixes '-дцать' and '-десят' to build compound numbers.

  • Numbers 11-19 always end in '-надцать' (e.g., 'одиннадцать').
  • Tens (20, 30, 40, etc.) use '-дцать' or '-десят' (e.g., 'двадцать', 'пятьдесят').
  • Compound numbers (21-99) combine the ten and the digit (e.g., 'двадцать один').
Digit + Ten = Number (e.g., 20 + 5 = 25)

Overview

Ever tried to buy a SIM card in Moscow and felt like a toddler? You know the numbers 1 to 10. But the salesperson says пятьдесят and you freeze. Numbers 11 to 100 are your actual survival kit. They are the difference between paying 15 or 50 rubles. They help you tell your age on Tinder. They let you find the right gate at the airport. Learning them is like unlocking a level in a video game. Suddenly, the world makes sense. Prices, dates, and phone numbers become clear. Russian numbers are actually very logical. They follow patterns like Lego blocks. Once you see the pattern, you can't unsee it.
Russian numbers from 11 to 100 follow a predictable system. You start with the basic digits 1-9. Then, you add specific suffixes to create bigger numbers. For 11-19, the magic suffix is -надцать. For tens like 20 and 30, it is -дцать. For 50-80, the suffix is -десят. There are only a few rebels like 40 and 90. Compound numbers like 25 are just two words put together. It is much more consistent than English. No weird words like "eleven" or "twelve" to memorize here. Just pure, mathematical logic with a Slavic twist.

How This Grammar Works

Think of Russian numbers as a construction site. You have your base materials (1-10). To build the teens, you stack them on top of ten. In fact, the word -надцать literally comes from "on ten." For example, 11 is "one-on-ten." It is like saying 1+10. For the tens, you are just multiplying. 50 is "five-tens." It is very transparent. You don't need to be a math genius. You just need to know your 1-10 perfectly. If you know пять is 5, you already know 15 and 50. The logic stays the same throughout the whole set. It is like a cheat code for your brain.

Formation Pattern

1
For numbers 11-19: Take the digit (1-9). Drop the soft sign ь if it has one. Add -надцать.
2
11: один + надцать = одиннадцать. Note the double н!
3
15: пять (drop ь) + надцать = пятнадцать.
4
For 20 and 30: Take the digit and add -дцать.
5
20: два + дцать = двадцать.
6
30: три + дцать = тридцать.
7
For 50, 60, 70, 80: Take the digit and add -десят.
8
50: пять + десят = пятьдесят. Keep the soft sign in the middle!
9
The Rebels:
10
40 is сорок.
11
90 is девяносто.
12
100 is сто.
13
Compound numbers (like 21, 45, 99): Say the ten, then the digit.
14
21: двадцать один.
15
45: сорок пять.
16
99: девяносто девять.

When To Use It

You will use these numbers every single day. Ordering food on an app like Yandex Food? You need prices. Checking the battery percentage on your iPhone? That is a number. Giving your phone number to a new friend on WhatsApp? You need these. Telling your age in a Zoom interview? Essential. Reading the bus number in Saint Petersburg? Critical. Even checking the time on your Netflix subtitles involves these. If you are gaming online, you might need to say your level. Basically, if you want to exist in the modern world, you need 11-100. It is the language of reality.

Common Mistakes

The double н in одиннадцать is a classic trap. Don't forget it! Another big one is the soft sign ь. In teens (11-19), the ь is only at the very end. In 50-80, the ь is in the middle: пятьдесят. It is like a tiny speed bump for your tongue. Also, don't try to make 40 or 90 follow the rules. сорок and девяносто are the cool kids who don't follow trends. They just exist. Finally, watch your stress. In teens, the stress is almost always on the на. In tens, it usually stays on the first part.

Contrast With Similar Patterns

In English, 14 and 40 sound almost the same. This causes endless "Did you say fourteen or forty?" drama. In Russian, they are totally different. четырнадцать (14) and сорок (40) sound nothing alike. You will never mix them up. Also, unlike French, we don't do math. We don't say "four-twenty-ten" for 90. We just say девяносто. It is much kinder to your brain. Compared to German, we don't say the units before the tens. We say 21 as "twenty one," not "one and twenty." It is very straightforward.

Quick FAQ

Q

Why is 40 сорок?

It comes from an old word for a bundle of furs. History is weird.

Q

Does 11 have two 'n's?

Yes, один + надцать. It is a spelling bee favorite.

Q

Is 50 пятьдесят or пятьдесять?

It ends with a hard т. The soft sign is in the middle.

Q

How do I say 0?

That is ноль, but you won't need it for 11-100!

Q

Can I use these for dates?

Yes, but the endings change later. For now, just learn the bases.

Russian Numbers 11-100

Number Russian Structure
11
одиннадцать
1+teen
20
двадцать
ten
21
двадцать один
ten+1
40
сорок
irregular
50
пятьдесят
5+ten
90
девяносто
irregular
99
девяносто девять
90+9

Meanings

Cardinal numbers are used for counting objects, telling time, and expressing quantities.

1

Counting

Used to quantify nouns.

“Мне одиннадцать лет.”

“Там тридцать пять человек.”

Reference Table

Reference table for Russian Numbers 11-100: Counting and Prices
Number Russian Word Suffix Type Example
11-19
Digit + -надцать
Teens
пятнадцать (15)
20, 30
Digit + -дцать
Small Tens
тридцать (30)
40
сорок
Irregular
сорок (40)
50-80
Digit + -десят
Large Tens
шестьдесят (60)
90
девяносто
Irregular
девяносто (90)
100
сто
Base
сто (100)
21-99
Ten + Digit
Compound
двадцать два (22)

Formality Spectrum

Formal
У меня имеется двадцать рублей.

У меня имеется двадцать рублей. (Money)

Neutral
У меня двадцать рублей.

У меня двадцать рублей. (Money)

Informal
У меня двадцатка.

У меня двадцатка. (Money)

Slang
Двадцарик.

Двадцарик. (Money)

Structure of Russian Numbers

Числа (Numbers)

Teens (11-19)

  • -надцать on-ten

Tens (20-80)

  • -дцать / -десят multiples of ten

Rebels

  • сорок / девяносто 40 and 90

Teens vs. Tens Suffixes

Teens (-teen)
тринадцать 13
пятнадцать 15
Tens (-ty)
тридцать 30
пятьдесят 50

How to Build a Number

1

Is it between 11 and 19?

YES
Add -надцать to the base
NO
Check if it is a multiple of 10
2

Is it a multiple of 10?

YES
Use -дцать, -десят, or the irregulars
NO ↓

The Irregular & Special Numbers

🤪

The Weird Ones

  • • сорок (40)
  • • девяносто (90)
  • • сто (100)
👯

Double 'N'

  • • одиннадцать (11)
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Examples by Level

1

Мне одиннадцать лет.

I am 11 years old.

2

У меня двадцать книг.

I have 20 books.

3

Это стоит сорок рублей.

This costs 40 rubles.

4

Там пятьдесят человек.

There are 50 people.

1

Автобус номер тридцать два.

Bus number 32.

2

Мне нужно восемнадцать яблок.

I need 18 apples.

3

Ей семьдесят пять лет.

She is 75 years old.

4

У него девяносто девять проблем.

He has 99 problems.

1

Я ждал сорок пять минут.

I waited 45 minutes.

2

В группе двенадцать студентов.

There are 12 students in the group.

3

Цена выросла на шестьдесят процентов.

The price rose by 60 percent.

4

Нам нужно восемьдесят два билета.

We need 82 tickets.

1

Она купила четырнадцать роз для мамы.

She bought 14 roses for mom.

2

Мы проехали пятьдесят пять километров.

We drove 55 kilometers.

3

В этом здании девяносто комнат.

There are 90 rooms in this building.

4

Ему исполнилось двадцать шесть лет.

He turned 26 years old.

1

Около шестнадцати человек опоздали.

About 16 people were late.

2

Сумма составляет семьдесят три тысячи.

The sum is 73 thousand.

3

Они обсуждали тридцать восемь вариантов.

They discussed 38 options.

4

Нужно добавить девятнадцать элементов.

Need to add 19 elements.

1

Более восьмидесяти семи процентов согласны.

More than 87 percent agree.

2

Он представил сорок четыре доказательства.

He presented 44 proofs.

3

Среди двенадцати присутствующих был он.

Among the 12 present was he.

4

Это заняло пятьдесят девять минут.

It took 59 minutes.

Easily Confused

Russian Numbers 11-100: Counting and Prices vs Cardinal vs Ordinal

Learners mix up 'five' and 'fifth'.

Common Mistakes

✗

десять один

✓

одиннадцать

11 is a unique word, not 10+1.
✗

двадцать-пять

✓

двадцать пять

No hyphen in Russian numbers.
✗

пятьдесят (for 15)

✓

пятнадцать

Confusing teen suffix with ten suffix.
✗

сорокы

✓

сорок

Incorrect pluralization.
✗

тридцать один книг

✓

тридцать одна книга

Gender agreement is required.
✗

девяносто (for 99)

✓

девяносто девять

Missing the second digit.
✗

четыредесят

✓

сорок

Trying to follow the -десят pattern for 40.
✗

двадцать два студентов

✓

двадцать два студента

Case agreement error.
✗

семьдесят (for 70)

✓

семьдесят

Spelling error.
✗

девяносто (for 90)

✓

девяносто

Spelling error.
✗

пятидесяти (in nominative)

✓

пятьдесят

Using oblique case incorrectly.
✗

сорока (as subject)

✓

сорок

Using genitive instead of nominative.
✗

девяноста

✓

девяносто

Incorrect declension.
✗

одиннадцать (as adjective)

✓

одиннадцатый

Confusing cardinal/ordinal.

Sentence Patterns

У меня есть ___.

Real World Usage

Texting very common

Купи 20 яиц.

Shopping constant

Это стоит 50 рублей.

Travel common

Автобус 42.

Job Interview occasional

У меня 15 лет опыта.

Food Delivery common

Мне нужно 30 пицц.

Social Media common

Мне 25!

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🎯

The 'N' Rule

Only 'одиннадцать' (11) has a double 'н'. All other teens have just one. Think of it as 'one-one-надцать'.
⚠️

The Middle Soft Sign

In 50, 60, 70, and 80, the soft sign 'ь' is in the middle: 'пятьдесят'. Don't put it at the end!
💡

Stress Patterns

In teens, the stress is almost always on the 'на' syllable. Say it with confidence!

Smart Tips

Group them by sound.

Learning randomly. → Learning 20, 30, 40 together.

Focus on the -надцать suffix.

Learning 11, 12, 13 separately. → Learning 11-19 as a group.

Never use hyphens.

Writing 20-5. → Writing 20 5.

Practice aloud.

Reading silently. → Saying numbers out loud.

Pronunciation

o-din-NA-tsat

Stress

Stress in numbers is usually on the root.

Declarative

У меня 20. ↘

Stating a fact.

Memorize It

Mnemonic

Teens are 'nadt-sad' (teen-sad), tens are 'dtsat' (decades).

Visual Association

Imagine a teenager (11-19) wearing a 'teen' hat, and a grandfather (20-90) holding a 'ten' cane.

Rhyme

Teens end in 'nadtsat', tens in 'dtsat', count to 100, don't be sad!

Story

A teenager (11) walked into a store. He saw 20 old men (tens) sitting in a row. He asked for 21 apples, and they gave him 99.

Word Web

одиннадцатьпятнадцатьдвадцатьтридцатьсорокпятьдесятдевяносто

Challenge

Count backwards from 100 to 11 in 60 seconds.

Cultural Notes

Numbers are often used in specific idioms.

Derived from Old Church Slavonic.

Conversation Starters

“

Сколько тебе лет?

Journal Prompts

Write about your shopping list.

Common Mistakes

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

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Test Yourself

Fill in the blank for the number 15.

Ему ___надцать лет.

✓ Correct! ✗ Not quite. Correct answer: пят
When adding -надцать, we drop the soft sign from 'пять', so it becomes 'пятнадцать'.
Which is the correct word for 40? Multiple Choice

How do you say 40 in Russian?

✓ Correct! ✗ Not quite. Correct answer: сорок
40 is irregular in Russian and is always 'сорок'.
Find the mistake in the number 11. Error Correction

Find and fix the mistake:

Is 'одинадцать' correct?

✓ Correct! ✗ Not quite. Correct answer: одиннадцать
11 is spelled with a double 'н' (один + надцать).

Score: /3

Practice Exercises

8 exercises
Fill in the blank.

15 is ___.

✓ Correct! ✗ Not quite. Correct answer: пятнадцать
15 is пятнадцать.
Choose the correct number. Multiple Choice

Which is 40?

✓ Correct! ✗ Not quite. Correct answer: сорок
40 is irregular.
Fix the error. Error Correction

Find and fix the mistake:

двадцать-пять

✓ Correct! ✗ Not quite. Correct answer: двадцать пять
No hyphen.
Order the words. Sentence Building

яблок / двадцать / у / меня

✓ Correct! ✗ Not quite. Correct answer: У меня двадцать яблок
Standard word order.
Match number to word. Match Pairs

20 = ?

✓ Correct! ✗ Not quite. Correct answer: двадцать
20 is двадцать.
Write the number. Conjugation Drill

50

✓ Correct! ✗ Not quite. Correct answer: пятьдесят
50 is пятьдесят.
Complete the dialogue. Dialogue Completion

A: Сколько тебе лет? B: Мне ___.

✓ Correct! ✗ Not quite. Correct answer: двадцать пять
Age uses cardinal numbers.
True or False? True False Rule

11-19 are two words.

✓ Correct! ✗ Not quite. Correct answer: False
They are one word.

Score: /8

Practice Bank

10 exercises
Translate '21' to Russian. Translation

Twenty-one

✓ Correct! ✗ Not quite. Correct answer: двадцать один
Match the digits to their Russian words. Match Pairs

Match the following:

✓ Correct! ✗ Not quite. Correct answer:
Put the words in order: 'I am 30 years old'. Sentence Reorder

лет / тридцать / Мне

✓ Correct! ✗ Not quite. Correct answer: Мне тридцать лет
Complete the number 80. Fill in the Blank

восемь___

✓ Correct! ✗ Not quite. Correct answer: десят
Which is 19? Multiple Choice

Select the correct spelling for 19:

✓ Correct! ✗ Not quite. Correct answer: девятнадцать
Fix the number 70. Error Correction

семьдесят (Is there a soft sign in the middle?)

✓ Correct! ✗ Not quite. Correct answer: семьдесят
Translate '64' to Russian. Translation

Sixty-four

✓ Correct! ✗ Not quite. Correct answer: шестьдесят четыре
Which one is 13? Multiple Choice

13 is:

✓ Correct! ✗ Not quite. Correct answer: тринадцать
Complete the word for 100. Fill in the Blank

Number 100 is ___.

✓ Correct! ✗ Not quite. Correct answer: сто
Match the teen to the ten. Match Pairs

Match related numbers:

✓ Correct! ✗ Not quite. Correct answer:

Score: /10

FAQ (8)

It's an archaic remnant of a bundle of 40 furs.

Only 1 and 2.

двадцать один.

No, never.

No, it's 'девяносто'.

Use cardinal numbers.

No, they are very logical.

Yes, in informal contexts.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

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In Other Languages

Spanish moderate

veinte, treinta...

Russian is more regular in the teens.

French low

vingt, trente...

Russian is purely decimal.

German moderate

zwanzig, dreißig...

German uses 'one-and-twenty' structure.

Japanese high

nijū, sanjū...

Japanese uses kanji characters.

Arabic moderate

ishrun, thalathun...

Arabic has dual forms.

Chinese high

èrshí, sānshí...

Chinese has no teen suffix.

Learning Path

Prerequisites

Next
Counting Things: Numbers & Noun Agreement

Related Grammar Rules

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