What prefix indicates one hundred of a base unit?

The prefix that indicates one hundred of a base unit is "hecto." In the metric system, prefixes are used to denote multiples of units to simplify calculations and express measurements efficiently. The prefix "hecto-" specifically represents a factor of 100, which makes it easier to quantify larger amounts of a base unit without resorting to large numerical figures.

For example, one hectometer is equal to 100 meters. This clarity in measurement is essential in fields like engineering, where precision is crucial.

While "giga" denotes one billion (10^9), "mega" represents one million (10^6), and "kilo" indicates one thousand (10^3), these prefixes serve different purposes and cannot be equated to the same value as hecto. Thus, understanding and utilizing the correct prefix is vital for accurate communication and calculation in scientific and engineering contexts.