# SI units and the Metric System

## What is 'SI'?

SI stands for the International System of Units. The system officially got its name by CGPM in the year of 1960. To the right is a picture of the SI units.

## Why are SI units and the metric system so useful and important?

SI units and the metric system are important and useful because they make up all the the measurements people use and without it we wouldn't have any.

## What are the SI base units and abbreviations for length, volume, mass, temperature, and time?

Length's unit and abbreviation is Meter and m, volume is liter and L, mass is gram and g, temperature is kelvin and K, time is seconds and s. Below is a picture of the abbreviations of the SI units I mentioned and ones I didn't.

## What is the metric unit stair step?

The metric unit stair step is a system that makes converting one metric unit to another a lot easier then using other methods. Down below is a picture of the metric unit stair step.

## How to go to smaller to larger or larger to smaller on the metric unit stair step.

To go larger on the stair step you would move the decimal to the right as many times as you would move up on the ladder. To go smaller you need to move the decimal to your right however many times you went down on the stair step. Below are going to be some examples of how to use the stair step.

## Examples of how to use the metric unit stair step.

245 km = 245000 m

1 cm = .01 m

1,5 cm = .015 m

42 mm = .42 dm

100 cL = 1000 mm

245 mm = .0245 Dm

10 g = 10000 mg

5 L = 5000 mL