
Table of Contents
 Every Integer is a Whole Number
 Understanding Integers and Whole Numbers
 Proof: Every Integer is a Whole Number
 Examples and Case Studies
 Example 1: Adding Integers
 Example 2: Counting Objects
 Case Study: Temperature Measurement
 Key Takeaways
 Q&A
 Q1: Can a decimal number be considered an integer?
 Q2: Are all whole numbers integers?
 Q3: Can zero be considered a whole number?
 Q4: Are negative numbers considered whole numbers?
 Q5: Can fractions be considered whole numbers?
 Q6: Are there any reallife applications where the distinction between integers and whole numbers is important?
 Q7: Can you provide another proof that every integer is a whole number?
Integers and whole numbers are fundamental concepts in mathematics. While they may seem similar, there is a distinct difference between the two. In this article, we will explore the relationship between integers and whole numbers, and explain why every integer is indeed a whole number.
Understanding Integers and Whole Numbers
Before delving into the connection between integers and whole numbers, let’s define each term:
 Integers: Integers are a set of numbers that include positive numbers, negative numbers, and zero. They do not include fractions or decimals. Examples of integers include 3, 0, 5, and 10.
 Whole Numbers: Whole numbers are a subset of integers that include only nonnegative numbers, including zero. They do not include negative numbers, fractions, or decimals. Examples of whole numbers include 0, 1, 2, and 10.
From these definitions, it is clear that every integer is a whole number, as integers encompass both positive and negative numbers, while whole numbers only include nonnegative numbers.
Proof: Every Integer is a Whole Number
To further solidify the claim that every integer is a whole number, let’s provide a proof:
Claim: Every integer is a whole number.
Proof:
 Let’s consider an arbitrary integer, n.
 If n is positive, it is a whole number since whole numbers include nonnegative numbers.
 If n is negative, it is not a whole number since whole numbers do not include negative numbers.
 However, we can take the absolute value of n, n, which will be a positive integer.
 Since positive integers are whole numbers, n is a whole number.
 Therefore, every integer, whether positive or negative, can be represented as a whole number.
Based on this proof, we can conclude that every integer is indeed a whole number.
Examples and Case Studies
Let’s explore some examples and case studies to further illustrate the relationship between integers and whole numbers:
Example 1: Adding Integers
Consider the addition of two integers, 3 and 5. The sum of these integers is 2. While 2 is an integer, it is not a whole number since whole numbers only include nonnegative numbers. This example demonstrates that not every integer is a whole number.
Example 2: Counting Objects
Suppose you have a bag of apples. If you count the number of apples in the bag and find that you have 10 apples, this is a whole number. However, if you count and find that you have 3 apples, this is not a whole number since whole numbers do not include negative numbers. This example highlights that whole numbers are used to represent quantities of objects, while integers can represent both quantities and their opposites.
Case Study: Temperature Measurement
In temperature measurement, integers and whole numbers play a significant role. When measuring temperature in degrees Celsius, 0 degrees Celsius is considered the freezing point of water. Any positive temperature above 0 degrees Celsius is represented by a positive integer, such as 10 degrees Celsius. These positive temperatures are whole numbers since they are nonnegative. On the other hand, any negative temperature below 0 degrees Celsius is represented by a negative integer, such as 5 degrees Celsius. These negative temperatures are not whole numbers since whole numbers do not include negative numbers. This case study demonstrates how integers and whole numbers are used to represent different temperature ranges.
Key Takeaways
After exploring the relationship between integers and whole numbers, we can summarize the key takeaways:
 Integers are a set of numbers that include positive numbers, negative numbers, and zero.
 Whole numbers are a subset of integers that include only nonnegative numbers, including zero.
 Every integer is a whole number since integers encompass both positive and negative numbers, while whole numbers only include nonnegative numbers.
 Examples and case studies, such as adding integers and temperature measurement, further illustrate the distinction between integers and whole numbers.
Q&A
Q1: Can a decimal number be considered an integer?
A1: No, decimal numbers cannot be considered integers. Integers are defined as whole numbers without any fractions or decimals. Decimal numbers, on the other hand, include fractional parts and are not considered integers.
Q2: Are all whole numbers integers?
A2: Yes, all whole numbers are integers. Whole numbers are a subset of integers that include only nonnegative numbers, including zero. Therefore, every whole number is also an integer.
Q3: Can zero be considered a whole number?
A3: Yes, zero is considered a whole number. Whole numbers include nonnegative numbers, and zero falls into this category. Therefore, zero is a whole number.
Q4: Are negative numbers considered whole numbers?
A4: No, negative numbers are not considered whole numbers. Whole numbers only include nonnegative numbers, which means they do not include negative numbers. Negative numbers are part of the set of integers, but they are not considered whole numbers.
Q5: Can fractions be considered whole numbers?
A5: No, fractions cannot be considered whole numbers. Whole numbers are defined as nonnegative integers, and fractions include fractional parts. Fractions are a separate concept in mathematics and are not considered whole numbers.
Q6: Are there any reallife applications where the distinction between integers and whole numbers is important?
A6: Yes, there are several reallife applications where the distinction between integers and whole numbers is important. Some examples include counting objects, representing quantities, and temperature measurement. Understanding whether negative numbers or fractions are included can significantly impact the accuracy and interpretation of these applications.
Q7: Can you provide another proof that every integer is a whole number?
A7: Yes, another proof can be provided using the concept of sets. We can define the set of whole numbers as {0, 1, 2, 3, …}, and the set of integers as {…, 3, 2, 1, 0, 1, 2, 3, …}. By comparing these sets, it is evident that every integer is included in the set of whole numbers, as the set of whole numbers