1. Integers
8.1. Introduction
8.2. Equivalent Ratio
8.3. Unitary Method
8.4. Percentage
8.4.1. Conversions
8.4.1.1. Convert a Fraction into Percentage
8.4.1.2. Convert a Percentage into Fraction
8.4.1.3. Convert Percentage into a Ratio
8.4.1.4. Convert a Ratio into Percentage
8.4.1.5. Convert Percentage into Decimal form
8.4.1.6. Convert Decimal into Percentage
8.4.2. Percentage of a Quantity
8.4.4. Word Problems on Percentage
8.5. Profit and Loss
8.6. Simple Interest
14. Symmetry