## 5.4 Outline

- Introduction
- definition of a rational number
- numerator
- denominator
- classification
- proper fraction
- improper fraction
- whole number

- Fundamental property
- Operations with rationals
- addition
- subtraction
- multiplication
- division

## 5.4 Essential Ideas

This section, which may be review, is concerned with the rational numbers (fractions) and operations with rational numbers. You must remember the definition of a rational number, the fundamental property of fractions (how to reduce a rational number):