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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 81 to 100.
We use number names to represent numbers in words, which makes them easier to read and understand. For example, the number 85 is written as ‘Eighty-Five’. Writing numbers in words not only helps when filling out legal documents and forms, but it also improves a student’s spelling skills.
There are two main ways of naming numbers:
The Indian Numbering System
The International Numbering System
It is important to understand both systems, as this knowledge helps in communication and arithmetic calculations.
Now, let’s explore these two numbering systems.
In the Indian Numbering System, digits are assigned place values starting from the right. These place values include ones, tens, hundreds, thousands, and they continue to increase as the number grows.
For example, in the number 86,
6 is in the ones place
8 is in the tens place
The order of place values in this system is:
Ones → Tens → Hundreds → Thousands → Ten Thousands → Lakhs → Ten Lakhs → Crores
Each digit gets its value based on its position in the number.
Let’s take a larger number as an example: 9,56,28,743
This number is written in words as:
Nine Crore Fifty-Six Lakhs Twenty-Eight Thousand Seven Hundred Forty-Three
Here’s how each digit is placed:
9 in the crores place
5 in the ten lakhs place
6 in the lakhs place
2 in the ten thousands place
8 in the thousands place
7 in the hundreds place
4 in the tens place
3 in the ones place
Just like the Indian Numbering System, the International Numbering System also uses place names, but they differ for larger numbers.
In this system, the place value starts from the right, and the order is:
Ones → Tens → Hundreds → Thousands → Ten Thousands → Hundred Thousands → Millions → Ten Millions → Hundred Millions, and so on.
Let’s look at an example: 743,856,269
This number is written in words as:
Seven Hundred Forty-Three Million Eight Hundred Fifty-Six Thousand Two Hundred Sixty-Nine
Here's how the digits are placed:
7 in the hundred million place
4 in the ten million place
3 in the million place
8 in the hundred thousand place
5 in the ten thousand place
6 in the thousand place
2 in the hundreds place
6 in the tens place
9 in the ones place
Learning the names of the numbers from 81 to 100 using a chart will make it easy for the students to write the numbers in words. List of Numbers in Words 81 to 100
The list given below shows how numbers from 81 to 100 are written using letters. Learning to write the numbers in words improves their skills in reading and writing.
While writing numbers from 81 to 100, there are certain rules to be followed. Below discussed are some rules to keep in mind while writing the names of numbers.
Rule 1: Always start naming with ‘Eighty’ for any number from 81 to 89. For example, 85 is written as Eighty-Five.
Rule 2: For numbers starting with 90, use “Ninety.” For example, 91 is written as “Ninety-One.”
Rule 3: Numbers after 80 follow a pattern. For example, 81 is written as Eighty-One, 92 is written as Ninety-Two, and 99 is written as Ninety-Nine.
- Always use a hyphen while writing numbers like 85 and 98. It should be written as Eighty-Five and Ninety-Eight.
- Always keep writing the numbers with ‘Eighty’ or 'Ninety', as in Eighty for 80 and Ninety for 90.
- Always focus on the tens place for numbers like 81, 82, 83, etc. After writing Eighty, you just need to add the number. The mentioned numbers can be written as Eighty-One, Eighty-Two, and Eighty-Three.
Students can make mistakes while learning number names. Let’s discuss a few mistakes a student can make while writing numbers from 81 to 100.
What is the sum of 19 + 81 in words?
One Hundred
First, we need to find the sum 19 + 81
The sum is 100 → 19 + 81 = 100
We write 100 in words as One Hundred
What is the difference of 100 - 10 in words?
Ninety
We need to find the difference between 100 and 10
The difference is 90 → 100 - 10 = 90
Therefore, we write the answer as Ninety
Find the product of 20 and 4. Write the result in words
Eighty
The product is 80 → 20 × 4 = 80
Hence, 80 in words is Eighty.
What is (100 ÷ 2) + 35 in words
Eighty-Five
((100 ÷ 2) + 35) = 50 + 35 = 85
We find the final result as 85.
Therefore, 85 is written as Eighty-Five
What is the product of 3 and 33 in words?
Ninety-Nine
The product of 3 and 33 is 99 → 3 × 33 = 99
So, 99 in words is Ninety-Nine
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.
: She loves to read number jokes and games.