A rational number is a number that can be express as the ratio of two integers. A number that cannot be expressed that way is irrational. For example, one third in decimal form is 0.33333333333333 (the threes go on forever).
A rational number is a number that can be expressed as a fraction where and are integers and. . A rational number is said to have numerator and denominator. . Numbers that are not rational are called irrational numbers.
