在度量系统中，可以使用单词表示笨重的小的数字和大的数字。 也就是说，不用说1000米或1000克，你可以说1千米（千克可以缩写为k，千米缩小成1km）或1千克（克可以缩写为g, 千克写成1kg）。
整数
| 数.................... | 名称 | 符号 | Description (Short Scale) | Description (Long Scale) |
| 1,000,000,000,000,000,000,000,000 | yotta | Y | Septillion | Quadrillion |
| 1,000,000,000,000,000,000,000 | zetta | Z | Sextillion | Thousand Trillion/Trilliard |
| 1,000,000,000,000,000,000 | exa | E | Quintillion | Trillion |
| 1,000,000,000,000,000 | peta | P | Quadrillion | Thousand Billion/Billiard |
| 1,000,000,000,000 | tera | T | Trillion | Billion |
| 1,000,000,000 | giga | G | Billion | Thousand Million/Milliard |
| 1,000,000 | mega | M | Million | Million |
| 1,000 | kilo | k | Thousand | Thousand |
| 100 | hecto | h | Hundred | Hundred |
| 10 | deca | da | Ten | Ten> |
小数
| Number.................... | Name | Symbol | Description (Short Scale) | Description (Long Scale) |
| 0.1 | deci | d | Tenth | Tenth |
| 0.01 | centi | c | Hundredth | Hundredth |
| 0.001 | milli | m | Thousandth | Thousandth |
| 0.000 001 | micro | u | Millionth | Millionth |
| 0.000 000 001 | nano | n | Billionth | Thousand Millionth |
| 0.000 000 000 001 | pico | p | Trillionth | Billionth |
| 0.000 000 000 000 001 | femto | f | Quadrillionth | Thousand Billionth |
| 0.000 000 000 000 000 001 | atto | a | Quitillionth | Trillionth |
| 0.000 000 000 000 000 000 001 | zepto | z | Sextillionth | Thousand Trillionth |
| 0.000 000 000 000 000 000 000 001 | yocto | y | Septillionth | Quadrillionth |
生词表:
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