Section 1.3

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Section 1.2
Section 1.3
Section 1.4
Section 1.5
Section 1.6
Section 1.7
Section 1.8 		EXPONENTS, ORDER OF OPERATIONS, AND VARIABLE EXPRESSIONS
Objectives
  1. Define and use exponents and the order of operations.
  2. Evaluate algebraic expressions, given replacement values for variables.
  3. Determine whether a number is a solution of a given equation.
  4. Translate phrases into expressions and sentences into equations.
Terminology

Exponential Notation

Base

Exponent

Grouping Symbols

Algebraic Expressions

Equations

Order of Operations

Simplify expressions using the following order. If grouping symbols such as parentheses are present, simplify expressions within those first, starting with the innermost set. If fraction bars are present, simplify the numerator and the denominator separately.

  1. Evaluate exponential expressions.
  2. Perform multiplication or division in order from left to right.
  3. Perform addition or subtraction in order from left to right.

Note: Some students remember the order using the mnemonic device

Please Excuse My Dear Aunt Sally.

Exercise Set 1.3

see homework assignment sheet for specific problems.

Copyright 2006, Collin County Community College District and Rosemary M. Karr, Ph.D. All material on this site is for CCCCD class use only. Any unauthorized duplication or distribution is prohibited.