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Unit 3

Getting a Handle on Whole Numbers

In This Unit …

1  Chapter 6: Please Excuse My Dear Aunt Sally: Evaluating Arithmetic Expressions with PEMDAS The Three E’s of Math: Equations, Expressions, and Evaluation Introducing Order of Operations (PEMDAS) Handling Powers Responsibly Bringing It All Together: The Order of Operations Practice Questions Answers and Explanations Whaddya Know? Chapter 6 Quiz Answers to Chapter 6 Quiz

2  Chapter 7: Turning Words into Numbers: Basic Math Word Problems Dispelling Two Myths about Word Problems Solving Basic Word Problems Solving More-Complex Word Problems Practice Questions Answers and Explanations Whaddya Know? Chapter 7 Quiz Answers to Chapter 7 Quiz

3  Chapter 8: Divisibility and Prime Numbers Knowing the Divisibility Tricks Identifying Prime and Composite Numbers Practice Questions Answers and Explanations Whaddya Know? Chapter 8 Quiz Answers to Chapter 8 Quiz

4  Chapter 9: Divided Attention: Factors and Multiples Knowing Six Ways to Say the Same Thing Understanding Factors and Multiples Finding Fabulous Factors Generating a Number’s Factors Decomposing a Number into Its Prime Factors Finding the Greatest Common Factor Generating the Multiples of a Number Finding the Least Common Multiple Practice Questions Answers and Explanations Whaddya Know? Chapter 9 Quiz Answers to Chapter 9 Quiz