The standard unit of length in the metric system is the mete

The standard unit of length in the metric system is the meter. A length can be named using different metric units. The point marked on the ruler is 2.7 centimeters. Since each centimeter is 10 millimeters, the point is also 27 millimeters. In the metric system, solids can be measured in units of mass. The standard unit of mass is the gram. The mass of a vitamin pill may be measured in milligrams. A thumbtack has a mass of about 1 gram. A full liter bottle of soda has a mass of about 1 kilogram...

Solution

\"choose an appropriate metric unit of length\" means select suitable unit

they are not interested in value

1) distance across the end of a pencil = cm

2) length of a thumb= mm

3) distance from your home to Australia = km

4) width of a swimming pool = m

5) the mass of a tooth = mg
6) the mass of a puppy = g

7) the capacity of a bucket of water = L

8) the amount of water in a pond = kL