3.2 Percentages and Percent Change

Calculating percentages, percent increase/decrease, and solving real-world problems involving percentage applications.

本节包含的知识点

• 3.2.1 Percentage Basics and Calculations — Understanding percentages as ratios out of 100 and performing basic percentage calculations including finding a percentage of a number.
• 3.2.2 Percent Increase and Decrease — Calculating percentage changes by finding the difference relative to the original value, including applications to price changes and quantity adjustments.
• 3.2.3 Reverse Percentage Problems — Finding the original value when given a percentage change or finding what percentage one value represents of another.
• 3.2.4 Compound Percentage Changes — Applying multiple successive percentage changes to a value, such as multiple discounts or consecutive growth rates.
• 3.2.5 Real-World Percentage Applications — Solving practical problems involving percentages such as discounts, markups, taxes, tips, interest, and commission calculations.