Rational Numbers
the set of numbers that can be written as a fraction of two integers. In decimal form, the decimal will terminate or repeat. Denoted by the capital letter: Q.
Rational numbers are numbers that can be expressed as a ratio of two integers, where the denominator is not zero. Examples of rational numbers include integers (since they can be expressed as a ratio of themselves and 1), fractions (e.g. 3/4, 5/6), and decimals that eventually repeat (e.g. 0.3333… or 0.75).
Rational numbers are closed under addition, subtraction, multiplication, and division. This means that if we add, subtract, multiply, or divide two rational numbers, the result will be another rational number.
However, not all numbers are rational. For example, the square root of 2 is not rational because it cannot be expressed as a ratio of two integers. These numbers are called irrational numbers.
It is important to understand rational numbers because they are used in many real life situations, such as measuring lengths, weights, and temperatures, and in performing calculations in finance and engineering.
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