| A | B |
|---|
| Perimeter | the distance around the outside of a figure |
| Metric System | a system of measurements used to describe how long, how heavy, or how big something is |
| Meter | the basic unit of length in the metric system |
| Gram | the basic unit of mass in the metric system |
| Liter | the basic unit of volume in the metric system |
| Kilo | a prefix meaning 1000 |
| Centi | a prefix meaning 1/100 |
| Milli | a prefix meaning 1/1000 |
| Customary System | the system of measurements used in the United States to describe how long, how heavy, or how big something is |
| Conversion Factor | the number of measurement units that another unit is equal to |
