How to use this sheet

  • Have the child say what each choice costs in the end, not only what it costs today.
  • For interest, have the child make a table, year by year, before using a formula.
  • Talk about the questions with real examples, such as a phone plan or a savings account.

Common mistakes

  • Thinking a credit card is free money. What is spent must be paid back, often with interest.
  • Working out compound interest as simple interest. Each year’s interest is earned on the new total.
  • Writing an interest rate of 5% as 5 in a formula. Use 0.05.

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