Year 10 / Grade 10 • Daily Maths Drill
Exponential Growth and Decay
Use multiplicative change factors and interpret exponential models.
8 questions • 240-question rotating bank • 30 different sets before a full cycle repeats
8Questions
240Question bank
0Best score
💡 Quick Review
Exponential Growth and Decay
Exponential change repeatedly multiplies by the same factor rather than adding the same amount.
Key ideas
- growth factor
- decay factor
- compound percentage change
- tables/graphs
- model interpretation
Formula / rule: new value = initial × factor^n.
Worked example: 5% growth uses factor 1.05 each period.
Common trap: Repeated 5% growth is not the same as adding 5% of the original each time.
Key words
growth factor — multiplier greater than 1
decay factor — multiplier between 0 and 1
exponential — constant multiplicative rate
initial value — starting amount
compound change — repeated percentage change
How to use this drill: review the short notes when learning, then close them on later attempts and practise from memory. The rotating bank delays a full set repeat for 30 attempts on the same browser.