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Multiplication is used when changing from SI units to smaller units.

For example, to convert 35.8kg to grams, you would do the following:

(35.8kg) x (1000g/kg) = 35800g (The kilograms cancel, leaving grams.)

To convert 0.823m to centimeters, you would do the following:

(0.823m) x (100cm/m) = 82.3cm (The meters cancel, leaving centimeters.)

Q: When changing from SI units to smaller units what mathematical operation is used?

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When changing from a larger unit to a smaller unit, there will be more of them, so you will multiply.

more smaller units than the bigger units

It depends on what you are measureing. If you are measuring distance the mathematical untis would be meters or feet. If you are measuring time the units would be seconds. If you were measuring mass the units would be grams. If you were measuring speed the units would be a combination of distance and time which is meters per seconds or feet per seconds. Mathematical units just tell what variation a certain number has. Ex. 3meters 3feet 3yards these are have the same number but different units and therefore that means they are all different measurements. It all depends on the units.

The answer will depend on the two units. It will entail multiplication by a number that is greater than 1 (or division by a number smaller than 1).

Constants in the sense you mean are different to mathematical constants. They usually refer to a system in which two values are proportionate and so are of the units associated with the system.

Related questions

When changing from a larger unit to a smaller unit, there will be more of them, so you will multiply.

To change from a smaller unit to a larger unit, you have to divide. For example, 100 centimetres is equal to 1 metre.

The number of units will decrease and if it is going from largest to smallest the number of units will increase.

You must divide.

Baby changing units are very helpful for if you have an infant that needs changing while you are out. These changing units are located in public women's restrooms.

If the units are the same, that will be the one with the smaller number of units.

In the metric system basic units are multiplied or divided by 10 to get larger and smaller units

In the metric system basic units are multiplied or divided by 10 to get larger and smaller units

In the metric system basic units are multiplied or divided by 10 to get larger and smaller units

Marijuana is usually weighed in grams.

Sixty over seventy two in smaller units can be expressed as 5 over 6.

more smaller units than the bigger units