Which metric prefix represents 1/1000 of the base unit?

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Multiple Choice

Which metric prefix represents 1/1000 of the base unit?

Explanation:
Metric prefixes indicate powers of ten. 1/1000 equals 10^-3, and the prefix for 10^-3 is milli, so the base unit multiplied by milli is 0.001 of that unit. That’s why a millimeter is 0.001 meters and a milligram is 0.001 grams. For reference, centi is 10^-2 (0.01) and deci is 10^-1 (0.1), while deca is 10^1 (10).

Metric prefixes indicate powers of ten. 1/1000 equals 10^-3, and the prefix for 10^-3 is milli, so the base unit multiplied by milli is 0.001 of that unit. That’s why a millimeter is 0.001 meters and a milligram is 0.001 grams. For reference, centi is 10^-2 (0.01) and deci is 10^-1 (0.1), while deca is 10^1 (10).

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