Learn English Numbers 11-20: Pre-A1 Vocabulary Guide

Raúl Maguiña

Fundador da Langcom | Examinador dos exames de Cambridge e SIELE

julho 16, 2026

PRE-A1📚 Vocabulary⏱️ 3 min read
Learning English numbers 11 to 20 is a very important step for beginners! These numbers help you talk about many things every day. You will use them to say your age, how many items you have, or even parts of a phone number. Mastering these numbers makes your English communication much clearer and easier. Unlike numbers 1 to 10, some of these numbers have special names, like eleven e twelve. Others, from thirteen to nineteen, share a common ending: -teen. Finally, twenty is a new word for two tens. Understanding these unique patterns and practicing the pronunciation will build a strong foundation for counting higher. Start practicing these essential words today to improve your basic English skills for everyday conversations.

Why are numbers 11-20 important in English?

Numbers 11 to 20 are basic but very useful. You need them for many daily situations.

  • Talking about age: I am sixteen years old.
  • Counting things: I have twelve books.
  • Giving phone numbers: My number is five, five, five, one, three, seven, zero. (Here, thirteen e seventeen can be parts of a number).
  • Saying prices: This costs fifteen dollars.

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What are the English numbers from 11 to 20?

Here are the numbers from 11 to 20. Pay attention to how they look and sound.

  • 11: eleven
  • 12: twelve
  • 13: thirteen
  • 14: fourteen
  • 15: fifteen
  • 16: sixteen
  • 17: seventeen
  • 18: eighteen
  • 19: nineteen
  • 20: twenty

How can I use numbers 11-20 in sentences?

Using numbers in sentences is simple. Just put the number before the noun it describes. Look at these examples:

  • I have eleven apples.
  • She is twelve years old.
  • There are thirteen students in the class.
  • He has fourteen books at home.
  • We saw fifteen birds in the park.
  • My sister is sixteen.
  • I need seventeen pencils for school.
  • There are eighteen chairs in the room.
  • He bought nineteen candies.
  • I have twenty friends.
English Numbers 11-20
Número English Word
11 eleven
12 twelve
13 thirteen
14 fourteen
15 fifteen
16 sixteen
17 seventeen
18 eighteen
19 nineteen
20 twenty

Examples

  • I have eleven apples.
  • She is twelve years old.
  • There are thirteen students.
  • He has fourteen books.
  • We saw fifteen birds.
  • My sister is sixteen.
  • I need seventeen pencils.
  • There are eighteen chairs.
  • He bought nineteen candies.
  • I have twenty friends.

Practice

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Common mistakes for Spanish speakers

A common mistake for Spanish speakers is trying to translate numbers directly. For example, saying ten and one instead of eleven. Remember that eleven, twelve, e twenty are unique words in English.

Another mistake is confusing the -teen sound (like in thirteen) with the -ty sound (like in thirty). For numbers 13 to 19, always use -teen. Pay attention to the stress in words like thirteen (stress on ‘teen’) versus thirty (stress on ‘thir’).

Perguntas frequentes

Why are ‘eleven’ and ‘twelve’ special?

Numbers eleven e twelve are special because they do not follow the -teen pattern. They have their own unique names, just like one to ten.

How can I remember the ‘teen’ numbers?

Numbers from thirteen to nineteen all end with -teen. You can think of it like ‘ten plus three’ becomes thirteen. This pattern helps you remember them.

Are numbers 11-20 used often in English?

Yes, numbers 11 to 20 are used very often in daily English. You need them for counting, telling age, giving phone numbers, and many other common situations.

Related lessons

Sobre o autor: Raúl Maguiña

Raúl Maguiña é diretor da Asociación Educativa Langcom, um centro autorizado de preparação para o Cambridge English em EUA. Com mais de uma década de experiência no ensino de idiomas e em certificações internacionais, ele já ajudou milhares de alunos, professores e instituições de ensino em 25 países a obter as certificações de inglês da Cambridge, IELTS, TOEFL e Michigan.

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