The "Planck units" are generally the smallest units used - except for the Planck unit for mass, which is fairly large.
No, it cannot be smaller than a smaller unit!
Yes, the unit grams is smaller than the unit kilograms.
A microgram is the unit which is smaller than a milligram.
Nano second maybe?
1/2 unit, 1/4 unit,
There is no metric unit smaller than a millimeter. But , there are many other units which are smaller than mm . those are : nanom , picom , micrometer, fero meter ,etc.
Because the number of larger units will be less than the number of smaller units, and when you divide the answer is usually smaller than the number you started with.
You convert to a larger unit. Smaller to larger. Metre is 1000 times larger than a millimetre
Minuet And smaller then a Minuet is a second
A unit that is smaller than other units... like a decimal.
a micrometer
millimeter