This Year 11 iteration, growth and decay quiz has 10 short questions for pupils aged 15-16. Type your answer, check it straight away and read the explanation when you get one wrong.
Year 11 iteration, growth and decay quiz: the 10 questions
- Multiplier for an increase of 4%?100% + 4% = 104%.
- Multiplier for a decrease of 30%?100% - 30% = 70%.
- Value of Β£200 after 2 years at 10% compound interest in pounds?200 x 1.21.
- Simple or compound interest: interest is added and earns interest.Compound interest.
- A value halves each year from 80. What is it after 3 years?80 / 8.
- Original amount if Β£330 is after a 10% rise? (pounds)330 / 1.1.
- 1.1 squared?1.1 x 1.1.
- (Higher) x_{n+1}=x_n+3, x_0=2. What is x_3?2, 5, 8, 11.
- (Higher) f(0)=-2 and f(1)=3. Is there a root between 0 and 1? Yes or no.Sign change.
- Decay or growth: multiplier 0.9?Less than 1.
How to use this Year 11 iteration, growth and decay quiz
First, answer every question without a calculator unless the question says so. Then check your answer and read the short explanation. If you get fewer than 7 right, revise the iteration, growth and decay lesson and try again later. After that, try the multiple choice questions or the iteration, growth and decay worksheet.
Finally, take this quiz again before a test, because quick retrieval helps you remember. Moreover, all the pages of this chapter work together, so you can move between them at any time. For example, many pupils read the lesson on Monday, practise on Wednesday and test themselves on Friday.


















