6-2 Rates: To express rates in per unit form.

6-3 Proportions: To solve proportions.

6-4 Solving Problems with Proportions: To use proportions to solve problems.

6-5 Scale Drawing: To use scale drawings.

6-6 Percents and Fractions: To change fractions to percents and percents to fractions.

6-7 Percents and Decimals: To change decimals to percents and percents to decimals.

6-8 Computing with Percents: To compute with percents.