45 is a rational number
rational
Rational 0.45 = 45 / 100
It is irrational
All integers are rational, since they can be written, for example, in the form 45/1.
45 is real, rational, whole, natural, odd, composite, and an integer.
Rational. Unless it extends past the .45, and it doesn't repeat infinitely, it's rational.
It is both.
Yes.
4.5 is a rational number. It is 45/10.
-.45 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
irrational