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Last updated on May 26th, 2025

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30 in words

Professor Greenline Explaining Math Concepts

What are the uses of numbers? Numbers are used to count and express value, for example, 30 chocolates, 30 mins, 30 rupees. Numbers can be written in both numerical and words. There are many applications of numbers in words like filling bank checks, forms, etc.

30 in words for Indonesian Students
Professor Greenline from BrightChamps

30 in words

30 in words can be written as thirty. Let’s see how it is written by looking at the place values.


30 in words: thirty


Thirty in numbers : 30

 

30 in words
 

Professor Greenline from BrightChamps

How to write 30 in words

Place value is one of the significant criteria to be considered when we write a number in words. Place value is the value of each digit in number. It is determined as ones, tens, hundreds, thousands, etc. 

Let’s find out the place value of 30. Now let’s split the number


 

Tens

Ones

3

0

 

Professor Greenline from BrightChamps

Learn more about the number 30


As we have learned how to write 30 in words, so, let's learn more about the number 30 but exploring some mathematical properties.
 

Mathematical Property

Answers

Is 30 a composite number?

Yes

Is 30 a prime number?

No

Is 30 a perfect cube?

No

Is 30 a perfect square?

No

Cube root of 30

3.107

Square root of 30

5.477

Is 30 an even number?

Yes

Is 30 an odd number?

No

Factors of 30

1, 2, 3, 5, 6, 10, 15, 30

Prime factors of 30

2,3,5

Multiples of 30

30, 60, 90, 120, 150, 180, 210, 240, 270, 300

 

Max Pointing Out Common Math Mistakes

Common mistake and how to avoid them in 30 in words

When writing numbers in words, there are some chances of making mistakes. Now let’s see some major errors and ways to avoid them in 30 in words.
Spelling error:
 

Mistake 1

Red Cross Icon Indicating Mistakes to Avoid in This Math Topic

Spelling error:
 

Green Checkmark Icon Indicating Correct Solutions in This Math Topic

 One of the common errors while writing 30 in words is misspelling the word thirty. Some common mistakes are thirtee, thirtie, thiry, etc
 

Ray Thinking Deeply About Math Problems

FAQs on 30 in words:

1.Write the number 30 in words?

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2.How to spell 30th in English?

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3.How to write 31 in words?

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4.Is 30 an even or odd number?

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5.How to write 40 in words?

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6.How can children in Indonesia use numbers in everyday life to understand 30 in words?

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7.What are some fun ways kids in Indonesia can practice 30 in words with numbers?

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8.What role do numbers and 30 in words play in helping children in Indonesia develop problem-solving skills?

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9.How can families in Indonesia create number-rich environments to improve 30 in words skills?

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Professor Greenline from BrightChamps

Important Glossaries for 30 in Words

  • Composite number: A number which has more than 2 factors are composite numbers. 30 is a composite number, as it has more than 2 factors.

 

  • Square root: The square root of a number is a number, and when it is multiplied by itself gives the original number. The square root of 4 is ±2 as 2 × 2 =4.

 

  • Cube root: The cube root of a number is a number which when multiplied by itself twice results in the original number. The cube of 8 is 2 as ±2 × 2 × 2 =8

 

  • Odd number: An Odd number is a number which is not divisible by 2. 30 is not an odd number as it's divisible by 2, whereas 29 and 31 are odd numbers. 

 

  • Factors: Factors are the numbers that can divide the number without any remainder. For example, factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30
Professor Greenline from BrightChamps

About BrightChamps in Indonesia

At BrightChamps, numbers mean much more than just digits—they open up endless possibilities! Our purpose is to help children across Indonesia master essential math skills, focusing today on the 30 in words, with special attention on numbers in words—in an engaging, lively, and easy-to-understand way. Whether your child is calculating how fast a roller coaster travels through Dunia Fantasi, tracking scores at a local badminton match, or managing their allowance for the latest gadgets, mastering numbers gives them confidence to face daily challenges. Our interactive lessons make math easy and fun. Since kids in Indonesia learn differently, we customize our methods to suit each child’s style. From Jakarta’s busy streets to Bali’s stunning beaches, BrightChamps brings math to life, making it relevant and exciting throughout Indonesia. Let’s make numbers in words a delightful part of every child’s learning adventure!
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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.

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Max, the Girl Character from BrightChamps

Fun Fact

: She loves to read number jokes and games.

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