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506 LearnersLast updated on August 5, 2025
18 in Words
18 in words
How to write 18 in words
The place value for any number will start from ones’. We place 8 in one's place.
|
Tens |
Ones |
|
1 |
8 |
In ones place we write 8 and tens place we write 1.
Therefore, 18 in words is ‘eighteen’
Learn More About the Number 18
We learned to express 18 in words. Now we can discuss the properties of number 18
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Mathematical Property |
Answers |
|
Is 18 a composite number? |
Yes |
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Is 18 a prime number? |
No |
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Is 18 a perfect cube? |
No |
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Is 18 a perfect square? |
No |
|
Cube root of 18 |
2.62 |
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Square root of 18 |
4.24 |
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Is 18 an even number? |
Yes |
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Is 18 an odd number? |
No |
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Factors of 18 |
1, 2, 3, 6, 9 and 18 |
|
Prime factors of 18 |
2,3 |
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Multiples of 18 |
18, 36, 54, 72, 90, 108, 126, 144, 162, 180. |
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Grade 1
Common Mistakes and How to Avoid Them in 18 in Words
Mistakes are common for children while writing any numbers in words. The basic mistakes they make are in incorrect spelling or in putting digits in wrong places. Here, a list of noted mistakes is given for easy reference so that the children can easily avoid it.
Mistake 1
Mispronouncing 18
A kid may mispronounce, 18 as “eighty”. Make use of the audio clip that gives correct pronunciation and practice.
Mistake 2
Getting confused with the number 18 and 80
Children can write incorrect numbers. To write the correct number, make sure that you check the numbers by writing them in words. 18 is written as eighteen and 80 is written as eighty.
Mistake 3
Using XVIII to denote 18 in words
While writing the number in words, always make sure that you have spelled out everything. Don’t write “XVII” for 18 to create confusion.
FAQs on 18 in words
1.What is 1800 in words?
2.How do you write 800000 in words?
3.How to write 81 in roman numerals?
4.Is it eighteen or eighty for ‘18’?
5.Is 18 a multiple of 9?
Important Glossaries for 18 in words
- Checks: These are the financial documents used by people to transfer money into another account. For example, there’s a check number in check which is unique to the user.
- Perfect Square: A positive integer number we get when the same number gets multiplied two times, for example, numbers like 4, 9, 144 etc.
- Composite number: Number having more than two divisors. For example, numbers like 16, 24, 78 and so on.
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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.
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