How to Write 15 in Words (Fifteen) with Examples

Understanding how to write 15 in words is an essential skill in primary mathematics. Whether you are filling out a bank cheque, answering exam questions, or improving your number spelling, knowing the correct way to spell the number 15 is important for students of all ages. This concept also forms the foundation for learning about place value, number names, and number patterns.

How to Write 15 in Words?

The number 15 in words is written as fifteen. To break it down:

• The digit 1 is in the tens place, so it represents 10.
• The digit 5 is in the ones (units) place, so it represents 5.

Let’s see the number 15 in a place value chart:

When expanded, it looks like this:

1 × 10 + 5 × 1 = 10 + 5 = 15

Therefore, 15 in words is fifteen.

15 in Words in English (Number Names 11–19)

In English, the numbers from 11 to 19 have unique names ending with “teen.” Here is a quick reference:

Notice: It is fifteen (not "fiveteen")! This is a common mistake—always use the correct spelling.

What is 15? (Math Context & Properties)

Let’s understand where 15 fits in mathematics:

• 15 is a natural number.
• 15 is a whole number.
• 15 is an odd number (it cannot be divided evenly by 2).
• 15 is a counting number (1, 2, 3, ..., 15, ...).
• 15 is a composite number (it has factors other than 1 and itself: 1, 3, 5, 15).
• 15 as an ordinal number: fifteenth (See more on ordinal numbers).

This knowledge will help answer questions like "Is 15 odd or even?" (odd!) and "Is 15 a prime number?" (no, it’s composite).

Place Value and Expanded Form of 15

Understanding place value is crucial for writing numbers in words:

Expanded Form:

1 × 10 + 5 × 1 = 10 + 5

So, 15 in words is “fifteen.” The number 15 is made of “ten” and “five.”

Learn more about place value and counting numbers at Vedantu.

Worked Examples: Using “15 in Words”

Example 1 (Cheque Writing):

• Write “15” in words for a cheque.
• Answer: Fifteen Rupees Only.

Example 2 (Sentences):

• “There are fifteen apples in the basket.”

Example 3 (Fill in the blank):

• 13, 14, ___, 16, 17
  Answer: Fifteen

At Vedantu, you can practice number names and spelling patterns to master similar topics.

Practice Problems

• Write the following numbers in words: 12, 15, 18
• Which number is “fifteen” among these: 14, 15, 16, 17?
• Circle the correct spelling: fivteen / fifteen / fiften
• Write the place value of 1 in 15.
• Write 115 in words.

Try these in your notebook! For more, explore number names 1 to 20 on Vedantu.

Common Mistakes to Avoid

• Confusing "fifteen" with "fiveteen": The correct spelling is fifteen.
• Writing 50 as "fifteen": 50 is “fifty”, not “fifteen”.
• Mixing up the order of digits: “15” is always “fifteen”, not “five-ten”.

Tip: Remember, in English, “15” is “ten plus five,” but in words, we write “fifteen.”

Real-World Applications

Knowing how to write 15 in words is important for filling out forms, writing amounts in cheques or documents, and communicating numbers clearly. For example, writing “fifteen rupees” on a cheque helps prevent fraud. In daily life, you might say, “I am fifteen years old” or “the cake was divided into fifteen pieces.”

Related Articles and Pages

• Counting Numbers
• Place Value
• Whole Numbers
• Number Names 1 to 20
• Multiples of 15
• Odd and Even Numbers

In this topic, you have learned how to spell 15 in words as “fifteen,” understand its place value, see real-world uses, and avoid common errors. This basic skill builds confidence for exams and daily life, and at Vedantu, we guide you step by step through many more concepts in maths!