what are the four most commonly used metric prefixes
- The most common metric prefixes are: Kilo- (1000 units) symbol: k- Hecto- (100 units) symbol: h- *Deka- (10 units) symbol: da- Deci- ( a tenth of a unit) symbol: d- Centi- ( â¦ a hundredth of a unit) symbol: c- Milli- ( A thousandth of a unit) symbol: m- Micro- ( a millionth of a unit) symbol: Âµ- * Deka- may also be spelled, deca-