What are Natural Numbers?
Counting numbers (1 and up)
What category comes first?
Natural Numbers
What are whole numbers?
Positive, whole numbers (including 0)
What category comes second?
Whole numbers
What are integers?
A set of whole numbers and their negative opposites
What category comes third?
Integers
What are rational numbers?
Numbers that can be written as fractions, terminating decimals, and repeating decimals
What are the overall categories?
Rational and Irrational