Sets of Numbers

In this lesson, we learn about the sets of numbers and the types of numbers within each set. The first and largest set is the real numbers, which includes every number that exists in reality. Within the real numbers, there's a split between rational and irrational numbers. Rational numbers are numbers that either end or repeat themselves and can be written as fractions with no decimals. Irrational numbers don't end or repeat and include square roots. There are additional categories within the rational numbers, such as integers, whole numbers, and natural or counting numbers.

Learn about the sets of numbers and the types numbers contained in each set.

• How do you name the sets of numbers to which -2/3 belongs?
• What are the sets of numbers?
• What are real numbers?
• What letters and symbols are used to write the sets of numbers?
• What are rational and irrational numbers?
• How do you know if a number is rational or irrational?
• What are some examples of rational numbers?
• What is an example of an irrational number?
• What is an integer?
• What are some examples of integers?
• What is the difference between whole numbers and natural numbers?
• What are some examples of whole numbers and natural numbers?