Counting numbers, also known as natural numbers, are the basic numbers used for counting and ordering. They start from 1 and continue indefinitely: 1, 2, 3, 4, 5, .... These numbers do not include 0 or any negative numbers, making them essential for simple arithmetic and everyday counting tasks. In mathematics, counting numbers are used in various applications, such as set theory and number theory. They form the foundation for more complex number systems, including whole numbers, integers, and rational numbers. Understanding counting numbers is crucial for developing basic math skills and problem-solving abilities.