##### Rivkah Carl, I work at Noodle

A rational number is a number that is either an integer (whole number) or a number which is the result of a division of two other integers. (and can be put in the form a/b, where "a" and "b" are also integers. Negative numbers can be integers as well. Therefore, -11.3 is a rational number because it can be expressed as a fraction of -113/10 .