which prefix means 1/10 of a unit in the metric systems

deci

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The charts and explanations here may help further.

The prefix that means 1/10 of a unit in the metric system is "deci-". To understand why, let's break it down:

The metric system uses a series of prefixes to indicate different multiples of a base unit. These prefixes are added to the front of the base unit's name.

In this case, the base unit is "gram," which is a unit of mass in the metric system. To indicate 1/10 of a gram, we use the prefix "deci-".

To understand how the prefix works, consider that "deci-" comes from the Latin word "decimus," which means "tenth." So, when you see the prefix "deci-" attached to a unit of measurement, it means you are dealing with 1/10 of that unit.

For example, if you have 3.5 decigrams (dg), it means you have 3.5 times 1/10 of a gram, which is equivalent to 0.35 grams.

Remember, prefixes in the metric system are standardized and used consistently across different units. So, if you wanted to refer to 1/10 of a liter, you would use the same prefix "deci-," resulting in the unit "deciliter" (dL).