Name __________________________________ Date __________________ Hour ________ Honors Alg. 1 1-1 Variables and Expressions A ____________________________ consists of sums and/or products of numbers and variables. In the algebraic expression 0.10, the letter is called a variable. In algebra, ___________________ are symbols used to represent unspecified numbers or values. Any letter may be used as a variable. 0.10 2 + 4 3+ 6 ∙ 4 ÷ 3 A _________ of an expression may be a number, a variable, or a product or quotient of numbers and variables. There are two separate sub-sets of terms, depending on what they contain: 2 + 4 In a multiplication expression, the quantities being multiplied are ______________ and the result is the _____________. A raised dot or set of parentheses is often used to indicate a product. Many products do not contain any notation that they are in fact a product. ∙ () () ()() An expression like is called a _____________. The word power can also refer to the exponent. The _______________ indicated the number of times the base is used as a factor. In an expression of the firm , the ______ is . The expression is read “ to the th power.” When no exponent is shown, it is implied to be _____. Let’s begin by translating algebraic expressions to English descriptions. Examples 1. 3 4 2. 5 4 + 16 “three times to the fourth power” 3. 16 2 −3 4. 1 2 + 6 7 Goal 1: Write Verbal Expressions