# Is 0.8 repeating a real number, rational number, whole number, Integer, Irrational number?

Jul 10, 2015

It is a rational and real number.

#### Explanation:

Any number we use is real (there are others like complex, but they are very rarely used).
If a number consists only of sign and digits (like 0;327;98765;-5;-789 and so on) then it is a whole number or integer.

A rational number is any number that can be repesented as a fraction. So every integer is also a rational number (because it can be written as a fraction with the denominator 1) 5=5/1;27=27/1

An irrational number is any real number which cannot be represented as a fraction (like $\sqrt{3} , \pi , \log 3$ and others)

$0.8 = \frac{8}{10} = \frac{4}{5}$ so it is a rational number (but also real)