Q: What do you do when you go from a larger unit to a smaller unit?

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You convert to a larger unit. Smaller to larger. Metre is 1000 times larger than a millimetre

The answer to that one is going to depend on two things:-- what unit you are converting from-- what unit you are converting to

to get a unit

conversion factor

False

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You convert to a larger unit. Smaller to larger. Metre is 1000 times larger than a millimetre

Decagram if going from larger unit to smaller unit, and decigram if from smaller to larger.

The answer to that one is going to depend on two things:-- what unit you are converting from-- what unit you are converting to

To convert from a larger unit to a smaller unit you would multiply. Ex: 5 km = 5000 m Where 1 km = 1000 m <><><><><> It depends on which factor you are multiplying or dividing by. It can go either way. To convert from ounces to grams, for instance, you can divide by 28.350, or you can multiply by 0.035273.

There are two ways that are essentially the same and can be used freely - as long as the two units are of the same dimension (length, mass, time, etc.) of course.First way: MultiplicationYou multiply with the relation between the largerunit and the smaller unit, i.e. with how many of the larger unit that goes per one of the smallerunit.ExamplesIf the smaller unit is m (meter) and the larger is km (kilometer), you multiply by 1/1000 km/m.If the smaller unit is inches (in) and the larger is feet (ft), you multiply by 1/12 ft/in.If the smaller unit is µg (micrograms) and the larger is kg (kilograms), you multiply by 1/1,000,000,000 kg/µg.Second way: DivisionYou divide by the relation between the smallerunit and the larger unit, i.e. with how many of the smaller unit goes per one of the larger unit.ExamplesIf the smaller unit is m (meter) and the larger is km (kilometer), you divide by 1000 m/km to go from meters to kilometers.If the smaller unit is inches (in) and the larger is feet (ft), you divide by 12 in/ft to go from inches to feet.If the smaller unit is µg (micrograms) and the larger is kg (kilograms), you divide by 1,000,000,000µg/kg.

to get a unit

Because, for any given amount, there are fewer larger units that will go into that amount.

divide

you divide the smaller # into the bigger #----

Multiply

If the numerator is money then the smaller unit rate is better. If the denominator is the money, then the larger unit rate.

It makes sense to multiply when converting measurements to smaller units because it takes many smaller units to make up a larger unit. So in order to translate larger unit(s) into smaller units, you have to break up the larger unit(s) into many smaller pieces.