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How many milligrams are in one gram?

  1. 100 mg

  2. 1000 mg

  3. 10 mg

  4. 10000 mg

The correct answer is: 1000 mg

One gram is equal to 1000 milligrams. This relationship is based on the metric system, where the prefix "milli-" denotes a factor of one thousandth (1/1000). Thus, when converting grams to milligrams, you multiply the number of grams by 1000. Therefore, in one gram, there are precisely 1000 milligrams. This fundamental conversion is widely used in science and medicine for precise measurements of mass.