To convert milliliters to microliters, which operation is used?

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Multiple Choice

To convert milliliters to microliters, which operation is used?

Explanation:
Multiplying by 1000 converts milliliters to microliters because 1 milliliter equals 1000 microliters. The milli- prefix represents 10^-3 and the micro- prefix represents 10^-6, so there are 10^3 microliters in each milliliter. Expressing the same volume in the smaller unit increases the numeric value, hence the multiplication by 1000. Dividing by 1000 would give a smaller, incorrect number, and adding or subtracting 1000 has no relevance to this unit conversion.

Multiplying by 1000 converts milliliters to microliters because 1 milliliter equals 1000 microliters. The milli- prefix represents 10^-3 and the micro- prefix represents 10^-6, so there are 10^3 microliters in each milliliter. Expressing the same volume in the smaller unit increases the numeric value, hence the multiplication by 1000. Dividing by 1000 would give a smaller, incorrect number, and adding or subtracting 1000 has no relevance to this unit conversion.

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