Rational numbers are numbers that can be expressed as a ratio of
two integers. They can be in fraction, decimal or whole number
Irrational numbers are numbers that cannot be expressed as a ratio of two integers.
Go to the lesson on number subsets for further review.
Let's take a look at "pi" (π) for example. Pi has many different forms and approximations.
approximations of pi are rational
The actual number pi is an irrational number.
Non-perfect square roots are also irrational...
Examples are:, , and