# Metric System

### Test Review below

The metric system is a universal system of measurements. It is based on powers of 10. Every step is a power of 10.

In 1 meter there are 10 decimeters, 100 centimeters, and 1000 millimeters. In 1 kilometer, there are 10 hectameters, 100 decameters, 1000 meters, 10,000 decimeters, 100,000 centimeters, and 1,000,000 millimeters.
• Length is measured in meters (m)
• Volume is measured in liters (L)
• Mass is measured in grams (g)

```             kilo-   ______
\
hecta-  ______/                        /|\
\        |                |
deca-   ______/        |                |
\        |                |
(basic unit)  ______/        |                |Move up the chart -
\        |                |move the decimal
deci-   ______/        |                |to the left
\        |Move down the   |
centi-  ______/        |chart - move    |
\        |the decimal to  |
milli-  ______/        |the right
\|/```

• Count the number of steps between the units. That will identify how many places you will move the decimal point.

Examples:

4,100 mm = __4.100___ m

(moving from small (mm) to large (m), the decimal must be moved 3 spaces to the right)

0.0780 kg = __78.0___g

(moving from large (kg) to small (g), the decimal must be moved 3 spaces to the right)

Metric System Test
Wednesday, September 11, 2002
• Be able to do calculations involving Density
• Do metric system conversions
• Calculate problems or express numbers using scientific notation
• Know the basic units of measurement for length, volume, mass, time, and temperature