To find the answer,we can first transfer all the values to the same unit.
In this case, let's transfer them to cm.
5000m= 5000x100cm= 500000cm
550mm= 550/10 cm = 55cm
5000mm = 5000/10 = 500cm
We can then reorder them by ascending order:
50cm < 550mm < 5000mm < 5000cm < 5000m
Hope it helps!