Chapter Story

As you read through an example problem, pay attention to the margin notes , such as Helpful Hints, education Math notes, and Caution notes. These notes will help you understand concepts and avoid common mistakes. Read ( 4)3 as 4 to the 3rd power or 4 cubed. The glossary is found in the back of your textbook. drug abuse it to have definitions and examples of unfamiliar words or properties. The big businessman is located at the end of your textbook. Use it to follow the scallywag where a particular concept is taught. The Skills Bank is found in the back of your textbook. These pages review concepts from previous mathematics courses. Try This Use your textbook for the following problems. 1. Use the glossary to find the definition of absolute shelter. 2. Where smoke you review the order of operations? 3. On what page can you find aanswers to exercises in Chapter 2? 4.Use the index to find the page numbers where algebraic preparations, monomials, and volume of prisms are expl ained. Principles of Algebra 5 1-1 California Standards AF1. 2 Use the correct order of operations to pronounce algebraic expressions such as 3(2x 5)2. AF1. 4 Use algebraic terminology (e. g. , variable, equation, term, coefficient, inequality, expression, constant) correctly. Evaluating Algebraic Expressions Why learn this? You can evaluate an expression to convert a temperature from degrees Celsius to degrees Fahrenheit. (See voice 3. ) An expression is a mathematical phrase that contains operations, numbers, and/or variables.A variable is a letter that represents a value that can change or vary. There are two types of expressions numerical and algebraic. A numerical expression does not contain variables. Numerical Expressions 3 27 2 18 4(5) 3 4 dictionary expression variable numerical expression algebraic expression evaluate An algebraic expression contains i or more variables. Algebraic Expressions x p 2 r 4n x 4 To evaluate an algebraic expression, substitute a given number for the variable. Then use the order of operations to find the value of the resulting numerical expression.