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Last updated on October 15, 2025
A number with 1 digit ranges from 0 to 9. These are the basic building blocks in the number system, often called single-digit numbers. We will explore numbers up to 1 digit below.
Any number that has exactly one digit is known as a 1-digit number. The numbers from 0 to 9 are the 1-digit numbers. For example, 5 and 8 are 1-digit numbers.
Writing numbers up to 1 digit is straightforward as they consist of single digits from 0 to 9. There are no complex systems or commas involved. Each number is simply represented by its digit.
There is no significant difference between number systems for 1-digit numbers since they all consist of the digits 0 through 9.
A 1-digit number is already in its simplest form, with no further decomposition possible, as each digit represents its own value. Here are the place value names for a 1-digit number: Digit 1: Ones / Units
For example, the number 7 is simply 7 × 1 = 7, representing seven units.
1-digit numbers are simple and easy to understand. Here are some tips:
Even with small numbers, mistakes can happen. Here are some common errors and how to avoid them.
What is the largest 1-digit number?
9
In the range of 1-digit numbers, 9 is the highest number possible.
What is the sum of the largest and smallest 1-digit numbers?
9
The largest 1-digit number is 9 and the smallest is 0. Their sum is 9 + 0 = 9.
How do you write the number five in digits?
5
The number five is represented by the digit 5 in numeric form.
Is 10 a 1-digit number?
No
10 is a 2-digit number because it consists of the digits 1 and 0.
How many 1-digit numbers are there?
10
There are 10 numbers from 0 to 9 inclusive, each having exactly one digit.
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.