How many grams are equivalent to 1000 milligrams?

The conversion from milligrams to grams is based on the metric system, where 1 gram is equivalent to 1000 milligrams. Therefore, if you have 1000 milligrams and you want to convert it to grams, you divide the number of milligrams by 1000.

In this case, when you take 1000 milligrams and divide it by 1000, you arrive at 1 gram. This relationship is fundamental in metric conversions, as the metric system is structured around powers of ten, making calculations straightforward.

The other choices do not reflect this basic metric relationship; they either incorrectly represent the number of grams for the given milligrams or misinterpret the conversion factor.