![]() ![]() An example of an irrational number is the square root of a number. Irrational Numbers: All numbers except rational numbers. Rational numbers include whole numbers, zero, positive numbers, negative numbers, and decimal numbers. Rational numbers, simply stated, is any number that can be expressed as a fraction or as a ratio. The rational numbers (ℚ) are included in the real numbers (ℝ), and in turn include the integers (ℤ), which include the natural numbers (ℕ) Real numbers are endless and they go to the point of infinity. Real numbers include whole numbers, zero, fractions, decimals, rational numbers, irrational numbers, negative numbers, positive numbers, percentages, percentiles etc. Real numbers include all numbers except imaginary numbers. Real numbers can be thought of as points on an infinitely long number line. Although the numbers that are recited when counting are one type of number, there are several other kinds of numbers. Most people think of numbers as simply the numbers that they recite when they are counting. Perfect square: The square root is a whole number without any decimal points.Square root: The number that when multiplied by itself gives you the original number.Square: The product of a number multiplied by itself. ![]() Roman numerals: Alternative numbers sometimes used to express the year on the calendar and in pharmacology.Arabic numerals: The numbers that we use every day. ![]()
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