Which metric unit (km, m, cm, or mm) would you use to measure the following?
1. Length of a wrench
2. Thickness of a saw blade
3. Height of a barn
4. Width of a table
5. Thickness of a hypodermic needle
6. Distance around an automobile racing track
7. Distance between New York and Miami
8. Length of a hurdle race
9. Thread size on a pipe
10. Width of a house lot