Decimal numbers that can't be expressed as fractions are irrational numbers
A non-repeating, non-terminating one.
Pi is an irrational number
When a decimal can't be expressed as a fraction then it is an irrational number.
A decimal rational number can be expressed as a fraction A decimal irrational number can not be expressed as a fraction
Decimal numbers that can't be expressed as fractions are irrational numbers
They are the decimal numbers that can't be expressed as fractions.
It is a non non-terminating, non-recurring decimal. It is an irrational number.
Irrational.
A non-repeating, non-terminating one.
If it is a terminating or recurring decimal then it is not irrational. If it is an infinite, non-recurring decimal, it is irrational.
A decimal number can be rational or irrational.
Pi is an irrational number
When a decimal can't be expressed as a fraction then it is an irrational number.
A decimal rational number can be expressed as a fraction A decimal irrational number can not be expressed as a fraction
An irrational number, for example pi or e or the square root of 2
They are irrational.