Demystifying - Profit and loss review

Drills

Measuring a change as a percentage of the original amount, and comparing changes fairly.

Author note — to cover
  • Fluency — percentage change from original and new amounts, built so the change divides the original exactly (4 questions).
  • Profit and loss — percentage profit or loss from cost and selling prices, losses included (4 questions).
  • Comparing — deciding which of two changes is proportionally bigger, ending with a case where dividing by the new amount gives the planted wrong percentage (4 questions).

The test

—coming soon—

Where to go next

This mixed review uses the methods from these learning pages: