## What is the prefix Deka equivalent to?

Deka- is a combining form used like a prefix meaning “ten.” It is primarily used in the names of metric units to indicate that the measure is ten times the size of the unit denoted by the base word.

**What does the prefix Deka represent?**

In the SI, designations of multiples and subdivision of any unit may be arrived at by combining with the name of the unit the prefixes deka, hecto, and kilo meaning, respectively, 10, 100, and 1000, and deci, centi, and milli, meaning, respectively, one-tenth, one-hundredth, and one-thousandth.

**What is the prefix for 10-18?**

atto

Prefix | Symbol | Meaning |
---|---|---|

nano | n | 10-9 |

pico | p | 10-12 |

femto | f | 10-15 |

atto | a | 10-18 |

### What is the prefix for the factor 10 − 12?

pico p

Table 5. SI prefixes

Factor | Name | Symbol |
---|---|---|

10-9 | nano | n |

10-12 | pico | p |

10-15 | femto | f |

10-18 | atto | a |

**What is the prefix for 10-3?**

thousandth milli

The 20 SI Prefixes

Multiple | Amount | Prefix |
---|---|---|

10-3 | 1 thousandth | milli |

10-6 | 1 millionth | micro |

10-9 | 1 thousandth of a millionth | nano |

10-12 | 1 millionth of a millionth | pico |

**What is the prefix for 10 10?**

deca

The 20 SI Prefixes

Multiple | Amount | Prefix |
---|---|---|

101 | ten | deca |

Sub-multiple | Fraction | Prefix |

10-1 | 1 tenth | deci |

10-2 | 1 hundredth | centi |

#### What is the prefix for 10 3?

**What is the prefix meaning 10?**

DECA. Prefix meaning ‘ten’

**What is the prefix for 10-15?**

femto

The 20 SI Prefixes

Multiple | Amount | Prefix |
---|---|---|

10-12 | 1 millionth of a millionth | pico |

10-15 | 1 thousandth of a millionth of a millionth | femto |

10-18 | 1 millionth of a millionth of a millionth | atto |

10-21 | 1 thousandth of a millionth of a millionth of a millionth | zepto |

## What is the prefix for 9?

nona-

prefix | number indicated |
---|---|

hepta- | 7 |

octa- | 8 |

nona- | 9 |

deca- | 10 |

**What is the prefix for 10 20?**

The 20 SI Prefixes

Multiple | Amount | Prefix |
---|---|---|

Sub-multiple | Fraction | Prefix |

10-1 | 1 tenth | deci |

10-2 | 1 hundredth | centi |

10-3 | 1 thousandth | milli |