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Overview Real numbers include rational and irrational numbers, whole numbers, positive and negative integers, and the number 0. They can be used in operations such as addition, subtraction, multiplication, and division, as well as in expressions involving variables. Real Numbers Real numbers include many different types of numbers that are familiar, such as positive and […]
Overview Decimals and percent are used in many different types of mathematical calculations and applications. They require attention to detail to use correctly. Adding and Subtracting Decimals In order to add and subtract numbers that contain decimal points, the numbers must be aligned so that the place values are the same. Then they can be […]
Overview Cube and fourth roots follow rules similar to those for square roots. The rules for rational exponents are an extension of the rules for exponents and roots. Cube Roots If any real number b3 equals c, then b is the cube root of c, when b is not equal to 0. For example, 23 […]
Overview Linear inequalities in one variable can be solved similarly to linear equations in one variable. Properties that hold for linear inequalities include properties of addition, subtraction, multiplication, and division, as well as those involving relationships between negative numbers. Properties of Inequalities There are four properties of inequalities that hold true for real numbers. The […]
Overview Linear equations can be solved by isolating the variable on one side of the equals sign. This can be done by using the addition and multiplication properties, whether the variable is on one side of the equals sign or there is a variable on both sides of the equals sign. Equations with the Variable […]