Author note — to cover

Cover depreciation as repeated percentage loss: a multiplier below 1 raised to the power n for cars and equipment, final value and total loss, and mixed questions where the rate changes between years so different factors multiply. One-step reverse (original value) problems belong to Percentage change's reverse pages. Both tiers. (R16, R9)

• Fluency — direct questions on depreciation, limited to this lesson's stated scope (4 questions).
• Application — use the same skill in unfamiliar or contextual questions without introducing a later method (4 questions).
• Check — questions built around the exclusions and likely misconceptions named in the lesson brief (4 questions).