Why is 0.18 a rational number?

Answer 1

Well, sweetheart, a rational number is any number that can be expressed as a fraction, and 0.18 is no exception. You can write 0.18 as 18/100, which can be simplified to 9/50. So, yeah, 0.18 is rational, just like your decision to ask me this question.

Answer 2

Any terminating or non-terminating decimal digit is rational.

The easiest way to look at this is, writing the number in the fractional from.

0.18 can be written as 18/100.

Now, by the definition of a rational from, 18/100 is of the standard "p/q" from where q is not equal to 0 (q=100 here).

Thus, it is a rational number.

Answer 3

Yes

Answer 4

Yes

Answer 5

No