Inflation Adjustments, Real Interest Rates, and Purchasing Power

Annuities, Loan Amortization, and Progressive Taxation

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Apply the Fisher equation and CPI inflation adjustments to determine real returns on investments and future purchasing power.

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Annuities, Loan Amortization, and Progressive Taxation

10th Grade · Math · Open Global Math

5 lessons

Goal

Analyze ordinary annuities, calculate regular payments and future values of sinking funds, model loan repayments, and compute progressive income taxes.

5 lessons

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Future Value of Ordinary Annuities and Sinking FundsUp next
Present Value of Annuities and Lump-Sum EquivalencesNot started yet
Loan Amortization Schedules and Periodic Mortgage PaymentsNot started yet
Progressive Income Taxation: Marginal Rates and BracketsNot started yet
Inflation Adjustments, Real Interest Rates, and Purchasing PowerYou are here

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Learning standards covered

OGM.11.NUM.2Open Global Math Standards 2026™ · 10th Grade

Solve problems involving ratios, direct and inverse proportion, compound units (speed, density, pressure), percentage change, financial math (simple/compound interest, annuities, loans, taxation), arithmetic and geometric sequences/series, and nth-term derivations of linear and quadratic sequences.