describes any number that can be expressed as a fraction, with a non-zero denominator. Since any integer can be written with 1 in the denominator without changing its value, all integers are considered rational numbers. Every rational number has a decimal expression that terminates or repeats. That is, any rational number either will have a countable number of nonzero digits or will end with an ellipses or a bar (3.6666... or 3.6) to depict repeating decimal digits. Some examples of rational numbers include 12, -3.54, 110.256, -35/10, and 4.7