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What are Whole Numbers?

  • Alex Williams
  • March 1, 2023
  • 5 minute read
JAN23 What are Whole Numbers 2
By Getty Images from Unsplash+

Have you ever wondered what are whole numbers and why they can be so important in everyday life? Whole numbers represent the fundamentals of counting, measuring, and communicating. Understanding what constitutes a whole number is critical for successful problem-solving skills and math concepts’ practical application. Let’s look at their origin and usage while discussing simple whole number example to ensure mastery of these basic concepts.

1. What are Whole Numbers?

Whole numbers are an integral part of mathematics and provide the basis for counting and measuring. They consist of all positive integers, including zero, and can be used to measure physical objects or quantify relationships. Also, whole numbers do not include fractions, decimals, or negative integers. This distinction can help differentiate between real numbers and imaginary ones. In this way, these numbers are powerful tools that allow you to understand what are whole numbers. (See What is Number System Aptitude?) 

2. What is a Whole Number in Math?

A whole number, otherwise defined as an integer, is a mathematical term used to represent a number greater than or equal to zero. The symbol Z often represents whole numbers and is an integral part of algebra, geometry, and beyond computational equations.

In math, whole numbers include the natural counting numbers (1,2,3). The number zero (0) is also included in this category. Whole numbers are used to count objects and can be added together or subtracted from each other.

3. What is Whole Number Example?

Whole number examples are 0, 1, 2, 3, 4, 5, and so on. Whole numbers are mainly used for counting and measuring physical quantities like area size, volume, and length. Incorporating whole numbers into mathematical theories helps us better understand the real-world implications of natural phenomena. Check out What is an Identity of Function?

4. How do You Know if a Number is a Whole Number?

To know if a number is a whole number, or what are whole numbers, you must first examine the type of number it is. If the number has no decimal value and is an integer then it can be classified as a whole number. Knowing how to define a whole number can be helpful for certain types of mathematics; conversely, understanding how to classify different types of numbers correctly can open up new possibilities in fields such as physics and engineering.

5. What’s the Difference Between Whole Numbers and Integers?

Whole numbers and integers can often be used interchangeably, particularly when referring to positive numbers. We need to understand the fundamental differences between the two to explain how numbers relate to one another accurately.

Whole numbers are natural (positive counting numbers) that cannot be expressed as fractions, including 0. In contrast, integers also include positive and negative numbers that go up or down in increments of 1, beginning with -1 before zero and continuing onwards. 

6. Is a Negative Number a Whole Number?

Generally speaking, no, a negative number is not a whole number. Then, what are whole numbers? As defined by most mathematicians, whole numbers are any numbers 0, 1, 2, 3, and so forth. Whole numbers exclude decimals, fractions, and negative numbers; in other words, they only include strictly positive integers.

Negative numbers are considered part of the set referred to as integers. Integers include all whole numbers and their positive and negative negatives, including zero.

7. Is a Decimal a Whole Number?

Decimals do not necessarily belong in the category of whole numbers. Decimals look like whole numbers, but they express values between two integers, making them a different type of number altogether.

In constructing mathematical operations such as addition, subtraction, multiplication, and division, decimals must be handled differently than whole numbers since they represent fractional values.

8. Is Pi a Whole Number?

Pi, or 3.14, is one of the most widely-recognized constants in mathematics and science. Its value is used in many real-world calculations involving circles, from calculating the circumference of a circle to determining the area of a circular field. Its status as an irrational number means it can’t be expressed as a whole number; instead, its value is technically infinite, although most references round it off to 3.14 for convenience.

9. Is Zero a Whole Number?

The answer to whether zero is indeed a whole number depends on the context. In mathematics, it is generally accepted that zero is a whole number due to being part of the set of natural numbers. Must see What are the Prime Numbers between 20 and 30?

10. Why 0 is a Whole Number?

With its unique position in the numerical system, yes, zero is an important whole number. It is not a fraction or decimal and has no relation to a positive or negative number. However, it possesses the defining qualities of any whole number: zero is the sum of any number and its negative term. Zero represents an invaluable addition to a mathematical system that relies heavily on its use for efficient computation and accurate calculations.

11. Is Infinity a Whole Number?

Infinity: JAN23 What are Whole Numbers

Infinity is a concept that transcends mathematical understanding and yet is vitally important for many calculations. Interestingly, infinity does not register as a whole number, since it bears no numerical value by definition.

Rather than being considered an integer, it entirely stands outside the realm of numbers, having no basis in real-world physical concepts or measurements.

12. What is the Smallest Whole Number?

Since you are aware of what are whole numbers, note that the number 0 is an integral part of mathematics and foundational in understanding some of the more complex mathematical concepts. Hence, zero is the smallest whole number.

13. What is the Largest Whole Number?

The concept of the largest whole number is a little bit misleading because there is no such thing in reality. This is because every whole number has an immediate predecessor – the number before it, so the number before any existing whole number can be seen as larger than that number.

The only exceptions to this rule are 0 and negative numbers, which do not have predecessors associated with them. Read What is the Very Last Number in the World?

14. What is Not a Whole Number?

The numbers which do not exist between the 0 to infinity range are not whole numbers. All whole numbers are represented as integers, spanning from negative infinity to positive infinity as an uninterrupted sequence of values. If a number falls between whole numbers, such as 1 and 2, it would be categorized not as whole but rather fractional or decimal, depending on how it is represented. This unique distinction sets apart non-whole values from those whole ones that have no presence between their boundaries.

What are whole numbers and what is not a whole number? So, there you have it, a very simple explanation of whole numbers. We hope this helps the next time you try to explain them to someone else. Stay tuned for more math explained in everyday language in our upcoming blogs. (Also read How to do Addition using Standard Algorithm?)

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alex1
Alex Williams

Alex Williams is a PhD student in urban studies and planning. He is broadly interested in the historical geographies of capital, the geopolitical economy of urbanization, environmental and imperial history, critical urban theory, and spatial dialectics.

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