A **rational number** can be written as a fraction $\frac{p}{q}$,

where *p* and *q* are integers and *q* does not equal zero.

Integers, fractions, and repeating decimals are rational numbers.

A real number that is not rational is **irrational**.

A decimal that does not terminate or repeat is irrational.

A rational number can be written as a fraction $\frac{p}{q}$, where *p* and *q* are integers and *q* does not equal zero.

Integers, fractions, and terminating and repeating decimals are rational numbers.

Decimals that do not terminate or repeat are irrational.

$0.\stackrel{\u2013}{9}$ is a repeating decimal.

$-7$ is an integer.

$\sqrt{64}=8$, which is an integer.

So, $0.\stackrel{\u2013}{9},-7,$ and $\sqrt{64}$ are rational numbers.

$\frac{\pi}{3}=1.0471...$, which is a non-terminating, non-repeating decimal.

$\sqrt{92}=9.5916...$, which is a non-terminating, non-repeating decimal.

So, $\frac{\pi}{3}$ and $\sqrt{92}$ are irrational numbers.