Units of Mass or Weight

This lecture series discusses different units of mass in the metric and U.S. customary systems. Mass and weight are not the same thing, even though they are used interchangeably in everyday language.

Practice

Estimating mass (ounces and pounds) - Answers

1. The mass of a trumpet is about 3 pounds.

2. Pounds is the most reasonable unit to measure the mass of an average adult.

3. The mass of a composition notebook is about 7 ounces.

4. Pounds is the most reasonable unit to measure the mass of a couch.