Multiples of integers are the results you get when you multiply an integer by whole numbers. For example, the multiples of the integer 3 include 3, 6, 9, 12, and so on. These numbers continue infinitely, as you can keep multiplying 3 by larger whole numbers. Every integer has its own set of multiples. The multiples of 5 are 5, 10, 15, 20, etc. Multiples can be positive or negative, depending on the integer being multiplied. Understanding multiples is essential in various areas of mathematics, including arithmetic and algebra.