Real Numbers

Real numbers are the numbers that are used most often in everyday life. They include the natural numbers (1, 2, 3, etc.), whole numbers (0, 1, 2, 3, etc.), integers (-3, -2, -1, 0, 1, 2, 3, etc.), rational numbers (fractions and decimals) and irrational numbers (such as pi, the square root of two, and the square root of three).

Natural Numbers

Natural numbers are the counting numbers, 1, 2, 3, 4, and so on. They are the basic numbers used for counting, and they are not fractions or decimals. Natural numbers are also known as the counting numbers because they are used to count objects.

Whole Numbers

Whole numbers are the numbers 0, 1, 2, 3, and so on. Whole numbers are the numbers used to count the number of objects in a group. They are the numbers used to measure the size of a group.

Integers

Integers are the numbers -3, -2, -1, 0, 1, 2, 3, and so on. Integers are the numbers used to measure the distance between two points. They can be positive or negative, and they can also be zero.

Rational Numbers

Rational numbers are the fractions and decimals. Fractions are numbers that can be written in the form of a/b, where a and b are integers and b is not equal to zero. Decimals are numbers that can be written in the form of a decimal point followed by an infinite number of digits.

Irrational Numbers

Irrational numbers are numbers that cannot be written as a fraction or a decimal. Examples of irrational numbers include pi, the square root of two, and the square root of three. Irrational numbers are important in mathematics because they are used to calculate the areas of circles and other shapes.

Imaginary Numbers

Imaginary numbers are numbers that have a negative square root. For example, the square root of -1 is an imaginary number. Imaginary numbers are used in mathematics to solve equations that have no real solutions. They are also used in physics to describe the behavior of certain particles.