A microgram is ______ of a milligram.

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Multiple Choice

A microgram is ______ of a milligram.

Explanation:
In the metric system, prefixes show how big or small a unit is compared to another. A milligram carries the milli prefix (10^-3), while a microgram carries the micro prefix (10^-6). To relate them, remember that 1 milligram equals 1000 micrograms. So a microgram is 1/1000 of a milligram. For example, 5 micrograms equal 0.005 milligrams. The other fractions would imply different relationships (1/100, 1/10, or 1/1,000,000 of a milligram) and aren’t correct here.

In the metric system, prefixes show how big or small a unit is compared to another. A milligram carries the milli prefix (10^-3), while a microgram carries the micro prefix (10^-6). To relate them, remember that 1 milligram equals 1000 micrograms. So a microgram is 1/1000 of a milligram. For example, 5 micrograms equal 0.005 milligrams. The other fractions would imply different relationships (1/100, 1/10, or 1/1,000,000 of a milligram) and aren’t correct here.

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