TEKS Financial Mathematics: Unit 7 – Major Purchases

Unit 7 of TEKS Financial Mathematics helps students understand the financial decisions behind life’s biggest early purchases—buying a car, renting an apartment, and purchasing a home. Students learn how to compare options, calculate total costs, and evaluate long-term trade-offs so they can make informed choices that fit their budget and financial plan.

Through hands-on activities, students research real vehicles and housing options, calculate loan payments, build amortization tables, and perform rent-vs-buy comparisons. This unit brings together budgeting, credit, and mathematical analysis to prepare students for major real-world financial decisions.

Tiny man and woman buying car via internet shop. Auto review search, couple buying vehicle flat vector illustration. Dealership, online shopping, payment concept for banner or landing web page

What Students Do in Unit 7:

  • Calculate Total Cost of Ownership (TCO) for vehicles
  • Compare buying vs. leasing and understand depreciation
  • Use spreadsheets to calculate loan payments and build amortization tables
  • Determine an affordable rental budget and evaluate lease terms
  • Run rent-vs-buy analyses to understand long-term outcomes
  • Calculate homeownership costs (mortgage, taxes, insurance, maintenance)

Unit 7 gives students the tools to evaluate major purchases with clarity and confidence, ensuring these big decisions support—not undermine—their long-term financial goals.