2. Everyone who knows arithmetic can ...
3. Before the introduction of the metric system ...
4. The conversion to a higher quantity in a metric system is done ...
5. In 1791 the French Academy of Science decided ...
6. The two French scientists took this distance ...
7. Metre was also used to measure ...
8. The main advantage of the metric system is ...
9. The unit of mass was defined ...
10. The SI system is derived ...