Grade 11 · Math
Model repeated percent growth practice
Evaluate repeated growth using a constant multiplicative factor.
Opening your practice adventure…
Try a sample
An initial amount of 400 grows by 10% each period. What is the amount after 2 periods?
- 484
- 485
- 486
- 483
See the answer & why
484
Multiply by 11/10 each period: 400 × ()2 = 484.
A little hint: Percent growth applies to the new amount each period, not just the initial amount.
A teaching tip
Turn a percent increase into one plus the rate, then apply that factor each period.