Final answer:
To convert micrometers to millimeters, divide the number of micrometers by the conversion factor of 1,000. This is because a millimeter is 1,000 times larger than a micrometer.
Step-by-step explanation:
To convert micrometers to millimeters, you need to understand that one millimeter is equal to 1,000 micrometers. Therefore, when converting from a smaller unit (micrometer) to a larger unit (millimeter), you would need to divide by the conversion factor.
The conversion factor in this case is 1,000. So, if you have a measurement in micrometers and you want to convert it to millimeters, you divide the number of micrometers by 1,000. This process aligns with the general rule that when you are going from a smaller unit to a larger unit, you divide by the appropriate conversion factor and move the decimal point to the left.