Grade 8 Algebra: Word Problems: Exponents

Name: ______________________Date: ____________Score: ____ / 6

Level 1

Repeated multiplication

1. Solve:
$\text{A}$ $\text{bacteria}$ $\text{colony}$ $\text{doubles}$ $\text{every}$ $\text{hour.}$ $\text{It}$ $\text{starts}$ $\text{with}$ $\text{1}$ $\text{cell.}$ $\text{How}$ $\text{many}$ $\text{cells}$ $\text{are}$ $\text{there}$ $\text{after}$ $\text{5}$ $\text{hours?}$
2. Solve:
$\text{Write}$ $\text{3}$ $\text{times}$ $\text{3}$ $\text{times}$ $\text{3}$ $\text{times}$ $\text{3}$ $\text{as}$ $\text{a}$ $\text{power,}$ $\text{then}$ $\text{find}$ $\text{its}$ $\text{value.}$
3. Solve:
$\text{A}$ $\text{square}$ $\text{has}$ $\text{side}$ $\text{length}$ $\text{7}$ $\text{cm.}$ $\text{Find}$ $\text{its}$ $\text{area}$ $\text{as}$ $\text{a}$ $\text{power}$ $\text{and}$ $\text{as}$ $\text{a}$ $\text{number.}$
4. Solve:
$\text{A}$ $\text{cube}$ $\text{has}$ $\text{edge}$ $\text{length}$ $\text{4}$ $\text{cm.}$ $\text{Find}$ $\text{its}$ $\text{volume}$ $\text{as}$ $\text{a}$ $\text{power}$ $\text{and}$ $\text{as}$ $\text{a}$ $\text{number.}$
5. Solve:
$\text{Ana}$ $\text{tells}$ $\text{3}$ $\text{friends}$ $\text{a}$ $\text{secret.}$ $\text{Each}$ $\text{friend}$ $\text{tells}$ $\text{3}$ $\text{new}$ $\text{people,}$ $\text{and}$ $\text{each}$ $\text{of}$ $\text{those}$ $\text{tells}$ $\text{3}$ $\text{more.}$ $\text{How}$ $\text{many}$ $\text{people}$ $\text{hear}$ $\text{it}$ $\text{in}$ $\text{the}$ $\text{third}$ $\text{round?}$
6. Solve:
$\text{Leo}$ $\text{saves}$ $\text{1}$ $\text{coin}$ $\text{on}$ $\text{day}$ $\text{1}$ $\text{and}$ $\text{doubles}$ $\text{his}$ $\text{coins}$ $\text{each}$ $\text{day.}$ $\text{How}$ $\text{many}$ $\text{coins}$ $\text{does}$ $\text{he}$ $\text{save}$ $\text{on}$ $\text{day}$ $\text{8?}$