http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Chapter 1: Whole mumbers: How to dissect and solve word problems
Chapter 5: Solving for the unkmown : A how to approach for solving equations
Chapter 6: Percents and their applications
Chapter 8: Markups and markdowns: Insight into perishables
Chapter 11: Promissory notes, simple discount notes and the discount process
Chapter 12: Compound interest and present value