Metric conversions is often taught in a way that's confusing to many students. It involved multiplying or dividing by 10 repeatedly, or multiplying or dividing by 10, 100, 1000, 10000, etc.
This document simplifies this process, using the stairstep method. I've used it with great success in my middle school science classes.
The only skills students need:
-Ability to count to 6
-Know their left from their right
-Know how to find the decimal point in a number (including a whole number)
I've included two different Word/PDF versions. In one, it includes step-by-step directions, as well as a worked out example problem. The other version includes only the stairstep, such as might be used on a quiz.
I also have a "how-to" video for metric conversions, for student/teacher use for sale on my page.