Number Names 11 to 30
2026-02-28 08:39 Diff
https://brightchamps.com/en-us/math/numbers/number-names-11-to-30

145 Learners

Last updated on August 5, 2025

Number names are a way of expressing the written form of numbers using letters. Learning number names will help you learn the basics of counting, addressing parcels, official documents, and so on. In this topic, we will learn number names from 11 to 30.

Number Names 11 to 30

These are the words we use to represent numbers, making them easier to read.
Take the number 15 — it is written as ‘Fifteen’.

Writing numbers in words not only helps us write legal documents and fill forms, but it also improves a student’s spelling skills.

There are two main ways of naming numbers:

  • Indian Numbering System

  • International Numbering System

Understanding both systems will help in communication and arithmetic calculations.

Now, let’s discuss the two numbering systems.

Indian Numbering System

In the Indian Numbering System, digits are assigned place values starting from the right. These place values include ones, tens, hundreds, and thousands, and continue to grow as the number increases.

For example, in the number 28, the digit 8 is in the ones place, and 2 is in the tens place.

Starting from the right, the order goes:
Ones → Tens → Hundreds → Thousands → Ten Thousands → Lakhs → Ten Lakhs → Crores

Each digit holds a value based on its position.

Let’s take an example of the number 23.
It is written as Twenty-Three.

The number gets placed as:
2 in the tens place
3 in the ones place

International Numbering System

Just like the Indian Numbering System, the International Numbering System also uses names, and they differ for bigger numbers. The place value starts from the right. The place values are ones, tens, hundreds, thousands, hundred thousands, millions, ten millions, hundred millions, and so on. Let’s take the example of 27. The number is written as Twenty-Seven. The number gets placed as: 2 in the tens place 7 in the ones place

Explore Our Programs

Number Names 11 to 30 Chart

Learning the names of the numbers from 11 to 30 using a chart will make it easy for the students to write the numbers in words. List of Numbers in Words 11 to 30 The list given below shows how numbers from 11 to 30 are written using letters. Learning to write the numbers in words improves their skills in reading and writing.

Rules for Writing Numbers from 11 to 30

While writing numbers from 11 to 30, there are certain rules to be followed. Below discussed are some rules to keep in mind while writing the names of numbers. Rule 1: The numbers from 11 to 19 have unique names that do not follow a specific pattern. For example, 13 is written as Thirteen. Rule 2: Numbers from 20 to 29 are written with the base "Twenty" followed by the unit place name. For example, 24 is written as Twenty-Four.

Tips and Tricks for Number Names 11 to 30

Always use a hyphen while writing numbers like 25 and 28. It should be written as Twenty-Five and Twenty-Eight. Always keep in mind the unique names for numbers from 11 to 19 such as Eleven, Twelve, Thirteen, etc. For numbers 21 to 29, start with "Twenty" and then add the unit number. For instance, 27 is written as Twenty-Seven.

Common Mistakes and How to Avoid Them in Number Names 11 to 30

Students can make mistakes while learning number names. Let’s discuss a few mistakes a student can make while writing numbers from 11 to 30.

Problem 1

What is the sum of 15 + 5 in words?

Okay, lets begin

Twenty

Explanation

First, we need to find the sum 15 + 5.

The sum is 20 → 15 + 5 = 20.

We write 20 in words as Twenty.

Well explained 👍

Problem 2

What is the difference of 30 - 10 in words?

Okay, lets begin

Twenty

Explanation

We need to find the difference between 30 and 10.

The difference is 20 → 30 - 10 = 20.

Therefore, we write the answer as Twenty.

Well explained 👍

Problem 3

Find the product of 5 and 3. Write the result in words.

Okay, lets begin

Fifteen

Explanation

The product is 15 → 5 × 3 = 15.

Hence, 15 in words is Fifteen.

Well explained 👍

Problem 4

What is (30 ÷ 2) + 10 in words?

Okay, lets begin

Twenty-Five

Explanation

((30 ÷ 2) + 10) = 15 + 10 = 25.

We find the final result as 25.

Therefore, 25 is written as Twenty-Five.

Well explained 👍

Problem 5

What is the product of 2 and 14 in words?

Okay, lets begin

Twenty-Eight

Explanation

The product of 2 and 14 is 28 → 2 × 14 = 28.

So, 28 in words is Twenty-Eight.

Well explained 👍

FAQs on Number Names 11 to 30

1.What is the number name of 19?

The number name of the number 19 is Nineteen.

2.What is (30 - 5) in words?

The difference is 25. Therefore, 25 in words is Twenty-Five.

3.Which is correct for 15: Fifteen or Fifty?

The correct number name for number 15 is Fifteen.

4.How to write 22 using the Indian Numbering System?

22 in the Indian Numbering System is written as Twenty-Two.

5.What is the number form of twenty-nine?

The number form of Twenty-Nine is 29.

Important Glossaries for Number Names 11 to 30

  • Place Value: The value of a digit based on its position within a given number. For example, in 23, we place 3 in the ones place and 2 in the tens place.
  • Number Form: It is the numerical form of a number written in words. For example, the number form of Twenty-Four is 24.
  • Hyphen: A punctuation mark used to connect words. In number names like Twenty-One, a hyphen is used.
  • Tens Place: The second digit from the right in a two-digit number, representing the number of tens.
  • Unique Number Names: The names for numbers 11 to 19, which do not follow a standard pattern. For example, Eleven, Twelve, Thirteen, etc.

What Are Numbers? 🔢 | Fun Explanation with 🎯 Real-Life Examples for Kids | ✨BrightCHAMPS Math

▶

Hiralee Lalitkumar Makwana

About the Author

Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.

Fun Fact

: She loves to read number jokes and games.