Integers are the set of whole numbers and their opposites.
{. . . -3, -2, -1, 0, 1, 2, 3 . . . } is the set of integers.

Video Examples: What are Integers?

Example of Integer

Following are some examples of integers.

-12,315
733,751
-10
121

Solved Example on Integer

Ques: Which of these sets orders the integers 25, -5, -15, 0, -30, 15 from least to greatest?

Choices:

A. 0, - 5, - 15, - 30, 15, 25
B. - 30, - 15, - 5, 0, 15, 25
C. 15, 25, 0, - 30, - 15, - 5
D. 25, 15, 0, - 30, - 15, - 5
Correct Answer: B

Solution:

Step 1: Represent the integers on a number line as shown below.
Step 2: On a number line, the numbers increase in value from left to right.
Step 3: The order of the integers from the least to the greatest is
- 30, - 15, - 5, 0, 15, and 25.