the gram
gram
At my local supermarket (in Canada), bananas are sold by the kilogram. In the US the are more often sold by the pound.
Milimeters
An appropriate metric unit of mass for a pencil would be grams.
The appropriate unit for mass of a grain of rice is milligrams (mg).
The international (SI) unit for mass is the kilogram.
One unit won't work for all of them. Coins and letters are small enough to be measured in grams. Bowling balls and encyclopedias are measured in pounds, and tractors in tons.
The standard unit to measure mass is kilograms.
The base unit of mass is the kilogram.
The appropriate metric unit is a kilogram.
grams
Im pretty sure kilograms is appropriate