This page is an exercise in converting densities expressed in the metric system. To start, press "New Problem" and a density conversion will appear. In the answer cell, enter the value which the density would have when expressed in the desired units. Press "Check Answer", and results appear in the table. Scientific notation is represented using the "e" notation. Thus,
2.3*103 will be shown by 2.3e3. Pressing "Show Answer" will cause the correct answer to appear and you will no longer be able to submit an answer for that problem.