New exercises - metric system

I was looking for exercises about converting measurements within the metric system and there aren´t exercises using all the measurements. For exemple, for lenght, there is one exercise to convert to smaller measurement units, but not for bigger units. Even that exercise doesn't include "decimetro, hectômetro and decâmetro". The same goes for volume and mass.

Those measurements are part of the curriculum for 4th and 5th grades in Brazil, so, it would be great if they were added to the list.

Thanks