Is 6.48 a rational number?
Rational numbers are those which can be written as a fraction (ie as a ratio between two quantities.)
A rational number can be written as
Rational numbers include all the integers, all the vulgar fractions as well as the terminating and recurring decimals.
Irrational numbers cannot be written as a fraction and are infinite, non-recurring decimals, for example.
It is a terminating decimal. (it ends)
It can be written as
It is the ratio: