Mathematics (2019) Grade(s): 09-12 - Mathematical Modeling

MA19.MM.6

Investigate growth and reduction of credit card debt using spreadsheets, including variables such as beginning balance, payment structures, credits, interest rates, new purchases, finance charges, and fees.

Unpacked Content

Knowledge

Students know:
  • how to calculate the balance on a credit card.

Skills

Students are able to:
  • Calculate the growth of credit card debt or the reduction of credit card debt.
  • Recognize that payments or new purchases affect the balance on a credit card.
  • Recognize that annual fees and interest rates affect the balance on a credit card.
  • Recognize that making a minimum payment does not significantly reduce the balance on a credit card.
  • Use a spreadsheet to perform repetitive calculations.

Understanding

Students understand that:
  • Credit card balances can grow due to high interest rates, finance charges, fees and new purchases.
  • Care should be taken to insure that credit card balances are monitored and controlled.

Vocabulary

  • Beginning Balance
  • Payment Structure
  • Investment Rate
  • Finance Charge
  • Fee
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