100 cm = 1 m, indicating the same length, but different units and different measurement standards.

If 100 cm = 1 m is right, then 100 cm is one meter, which is wrong.

Similarly, 1/5=2/ 10, which means the result is the same, but 1/5 is 1/5, and 2/ 10 is 2/ 10, with different levels.