Explain the rules for multiplication and division to convert units. How do you know when to multiply and when to divide to convert units of measurement?

When converting units of measurement, you can determine whether to multiply or divide based on the relationship between the units you are converting. If you are converting to a larger unit (e.g., from meters to kilometers), you multiply by a conversion factor less than 1; if you are converting to a smaller unit (e.g., from liters to milliliters), you multiply by a conversion factor greater than 1. Conversely, if you are converting from a larger unit to a smaller one, you divide by the conversion factor. Essentially, multiplying is used when going up in the unit scale and dividing is used when going down.