Measurement. The metric system…. Length. Distance or size in one dimension. In the US we use feet, inches and Miles The metric equivalent is Meters 1 M = 3.28 feet 1KM = .62 Miles The diameter of a CD or DVD is 12 cm. A doorknob is typically about 1 m high. Mass.
The metric system…
1 ml of water weighs 1 gram. 1 liter of water weighs 1 kilogram, so 1 cubic meter — 1000 liters — of water weighs 1000 kilograms or 1 metric ton.
A US penny weighs exactly 2.5 g, while the nickel weighs exactly 5 g.
As you move up the ladder, move the decimal place to the left for each step up .
As you move down the ladder, move the decimal to the right for each step down.