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31 in Words – Number Name, Spelling, and Examples

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How to Write 31 in Words Step by Step?

The concept of 31 in words is essential in mathematics and helps students write numbers accurately in words for homework, exams, cheques, and everyday communication.


Understanding 31 in Words

31 in words refers to the way we write the number 31 using the English alphabet instead of numerals. It is especially important when filling forms, bank cheques, or answering school questions asking for number names. This concept is widely used in numbers in words, numeral to word conversion, and written mathematics.


How to Write 31 in Words – Step-by-Step Method

Let's break down the process of converting 31 into words:

1. Start with 31, which is made up of digits "3" and "1".

2. In the place value system, "3" is in the tens place, "1" is in the ones place.

3. 3 × Ten = 30

4. 1 × One = 1

5. 30 + 1 = 31

6. Write "Thirty" for 30 and "one" for 1.

7. Join with a hyphen: Thirty-one.

So, 31 in words is written as Thirty-one.


31 in Words Spelling Table (30–40)

Here’s a helpful table to see how numbers from 30 to 40 are written in words:


Number Names from 30 to 40

Number Number in Words
30 Thirty
31 Thirty-one
32 Thirty-two
33 Thirty-three
34 Thirty-four
35 Thirty-five
36 Thirty-six
37 Thirty-seven
38 Thirty-eight
39 Thirty-nine
40 Forty

This table helps you learn and compare spellings around 31 in words easily. You can explore more number names on our Number Name 1 to 50 page.


31 in Words in Different Languages

Number names may also be needed in other languages. Here’s how 31 is written in a few Indian languages:

Language Number Name for 31
English Thirty-one
Hindi इकतीस (Ikatees)
Marathi एकतीस (Ekatīs)
Tamil முப்பத்து ஒன்று (Muṟpattu oṉṟu)

You can find more names and their patterns by visiting the Numbers in English page on Vedantu.


Ordinal and Larger Forms of 31

Sometimes, you may need to write the ordinal or thousand form:

31st in words: Thirty-first

31,000 in words: Thirty-one thousand

These forms are useful in dates (like “31st December”) or writing big numbers in words for maths problems.


Worked Example – Writing 31 in Words

Let's solve a sample problem for clarity:

1. Question: Write 31 in words.

2. Solution: Break into 30 + 1.

3. Write “Thirty” for 30.

4. Write “one” for 1.

5. Place a hyphen between them: Thirty-one.

Final Answer: 31 in words is Thirty-one.

Practice this method for any number between 21 and 99 to build your skills. You can also compare with 30 in words or 41 in words for better understanding.


Practice Problems

1. Write 33 in words.

2. What is the spelling of 31 to 40?

3. Write 31,000 in words.

4. Fill in: 31 = ________ (in English words)

5. How do you write 31st in words?

Common Mistakes to Avoid

  • Spelling "Thirty one" without a hyphen (should be "Thirty-one")
  • Mixing up 31 (Thirty-one) and 13 (Thirteen)
  • Writing 31st as "Thirty-oneth" instead of "Thirty-first"

Real-World Applications

You might use 31 in words when writing dates, cheques, filling application forms, and in exams. Learning the correct number names helps prevent errors and is part of strong maths fundamentals. Vedantu gives students plenty of spelling exercises and number practice to help them gain confidence in these tasks.


We explored the idea of 31 in words, the rules for writing it correctly in English and other languages, nearby spellings, and practical usage. Practice more via Vedantu’s number name and tables pages to become confident in number spellings and related maths topics.


Related Vedantu Resources

FAQs on 31 in Words – Number Name, Spelling, and Examples

1. What is 31 in words?

The number 31 in words is written as Thirty-one. This is the standard English spelling used in academic writing, cheques, and forms.

2. How to write 31 in words in English?

To write 31 in words, break it into tens and ones: 30 + 1. Write "Thirty" for 30 and "one" for 1, then combine with a hyphen to form Thirty-one. This method helps to write numbers from 21 to 99 correctly.

3. What is the spelling of 31 to 40 in words?

The numbers from 31 to 40 in words are spelled as:
31: Thirty-one
32: Thirty-two
33: Thirty-three
34: Thirty-four
35: Thirty-five
36: Thirty-six
37: Thirty-seven
38: Thirty-eight
39: Thirty-nine
40: Forty.
Note that all numbers between 21–99 (except multiples of ten) use a hyphen between the tens and units place words.

4. How do you write 31 in words in Hindi/Marathi/Tamil?

The number 31 in regional Indian languages is written as:
Hindi: इकतीस (Iktīs)
Marathi: एकतीस (Ektīs)
Tamil: முப்பதொன்று (Muppatoṉṟu).
This helps students studying in regional languages while understanding the English spelling.

5. How is 31st written in words?

The ordinal form of 31 is written as Thirty-first. It is used to indicate position or order, such as in dates or rankings. The suffix "-st" is pronounced as "first" and spelled accordingly.

6. How do you write 31,000 in words?

The number 31,000 in words is written as Thirty-one thousand. It combines the number 31 with the word "thousand" to represent the large number correctly according to place value rules.

7. Why do students often confuse 31 with 13 in words?

Students sometimes confuse 31 with 13 because both have the digits 1 and 3 but in different orders. Remember:
31 is Thirty-one (3 in tens, 1 in ones)
13 is Thirteen (10 + 3)
This confusion is common but can be avoided by focusing on place values and correct hyphenation.

8. Is there a trick to spelling all numbers from 21 to 39 correctly?

Yes, the key trick is to remember that numbers between 21 and 99 (except multiples of ten) are written with a hyphen between the tens and ones place words. For example:
• 21 = Twenty-one
• 35 = Thirty-five
• 39 = Thirty-nine.
This pattern applies consistently and helps in correct spelling.

9. Why is “Thirty-one” hyphenated in English?

The hyphen in Thirty-one follows English grammar rules for writing compound numbers between 21 and 99. Hyphenation combines the tens and unit place words to form a single number name, improving readability and clarity.

10. What is the difference between 31st and 31 in words?

The number 31 in words is Thirty-one, used for counting or representing a quantity.
The 31st is the ordinal form, written as Thirty-first, used to indicate position, rank, or date order.
Understanding the difference is important for exams and formal writing.

11. Why do competitive exams ask numbers to be written in words?

Competitive exams require numbers to be written in words to test students’ understanding of number names, spelling accuracy, and attention to detail. Writing numbers in words also helps avoid ambiguity and errors in communication, especially in financial or official contexts.

12. How can number names help avoid errors in cheques and forms?

Writing number names on cheques and forms is essential to prevent mistakes or fraud. If digits are incorrectly written or altered, the number in words serves as a backup reference, ensuring the intended amount is clear and legally valid.