Unit 4  Ratios
Learning Outcomes
• Represent a relationship between two quantities using ratios.
• Use the notations 𝑎𝑎 𝑏𝑏 , 𝑎𝑎: 𝑏𝑏, and 𝑎𝑎 𝑡𝑡𝑡𝑡 𝑏𝑏 to represent a realworld comparative relationship. • Create a realworld relationship for a given ratio. • Represent ratios as fractions, mixed numbers, decimals and/or percents. • Determine the decimal and percent equivalents for numbers written as fractions or mixed numbers, including repeating decimals. • Identify equivalent relationships among fractions, decimals, and percents. • Compare two percents using pictures and symbols(<, ≤, ≥, >, =). • Order no more than four positive rational numbers (fractions, mixed numbers, decimals and percents). • Identify the unit rate of a proportional relationship represented by a table of values. • Identify the unit rate of a proportional relationship described in a practical situation. • Use a unit rate to determine the missing value in a ratio tab 
Essential Questions
• How can you use a ratio to compare two quantities?
• How can you prove that two ratios are proportional? • How is being able to determine equivalent ratios helpful in solving real world problems? • How can you model and solve problems involving unit rates? • How can you use models or ratio reasoning to solve percent problems? 
Unit 4 Vocabulary
Ratio
positive negative comparative notation 
Rate
Quantities Rational Number Percent Table of Values 
Whole to Whole

wholetowhole ratios are typically not written in fraction form because it can cause confusion about the meaning of the ratio, which is known as RATE.
