## What is kilo, mega, giga, tera ... ?

In the Metric mechanism there space standard methods to talk about huge and small numbers:

"kilo" because that a thousand, "mega" because that a million, and an ext ...### Example: A long rope procedures **one thousand** meters

It is much easier to to speak it is 1 **kilo**meter long,

and even easier to write it under as **1 km**.

You are watching: 10,000,000,000,000,000,000

So we provided **kilo** in prior of the word **meter** to make "**kilometer**".

And the abbreviation is "**km**" (**k** because that kilo and **m** because that meter, placed together).

### Some an ext examples:

Example: You placed your bag ~ above a collection of scales and also it shows 2000 grams, us can contact that 2 **kilograms**, or simply 2 kg.

### Example: Teaspoon

A teaspoon hold 5 **thousandths** the a liter (*5***1000** of a liter), but it is much better to speak "5 **milli**liters", or create it just as **5 mL**.

So, using the prefix "milli" in front of "liter" creates a brand-new word "milliliter".

Here us list the prefix for commonly used big and small numbers:

## Common big and tiny Numbers

**Name**

**The Number**

**Prefix**

**Symbol**

trillion | 1,000,000,000,000 | tera | T |

billion | 1,000,000,000 | giga | G |

million | 1,000,000 | mega | M |

thousand | 1,000 | kilo | k |

hundred | 100 | hecto | h |

ten | 10 | deka | da |

unit | 1 | ||

tenth | 0.1 | deci | d |

hundredth | 0.01 | centi | c |

thousandth | 0.001 | milli | m |

millionth | 0.000 001 | micro | µ |

billionth | 0.000 000 001 | nano | n |

trillionth | 0.000 000 000 001 | pico | p |

Just remember for big values (each one a thousand times bigger):

"kilo mega giga tera"

and for little values (each one a thousand time smaller):

"milli micro nano pico"

### Try To do Some Yourself!

exactly how do you refer to a million liters? How about one**billionth**the a meter?

See the bottom the this web page for more questions to an obstacle yourself ...

## How large Are They?

There is a many difference in between them. Think in regards to time:

A longer list:

A**thousand**secs is around a

**quarter of one hour**A

**million**secs is about

**12 days**A

**billion**secs is around 32 years, practically

**half a lifetime**A

**trillion**seconds is about 32,000 years (the last Ice period finished 12,000 years ago)

## Much Bigger and Smaller

There are likewise prefixes for lot bigger and also smaller numbers:

## Some very Big, and also Very small Numbers

**Name**

**The Number**

**Prefix**

**Symbol**

Very large ! | |||

septillion | 1,000,000,000,000,000,000,000,000 | yotta | Y |

sextillion | 1,000,000,000,000,000,000,000 | zetta | Z |

quintillion | 1,000,000,000,000,000,000 | exa | E |

quadrillion | 1,000,000,000,000,000 | peta | P |

Very tiny ! | |||

quadrillionth | 0.000 000 000 000 001 | femto | f |

quintillionth | 0.000 000 000 000 000 001 | atto | a |

sextillionth | 0.000 000 000 000 000 000 001 | zepto | z |

septillionth | 0.000 000 000 000 000 000 000 001 | yocto | y |

Also seeLengths From an extremely Smallto really Large |

## All huge Numbers we Know

Name

**As a strength of 10**

**As a Decimal**

Thousand | 103 | 1,000 |

Million | 106 | 1,000,000 |

Billion | 109 | 1,000,000,000 |

Trillion | 1012 | 1,000,000,000,000 |

Quadrillion | 1015 | etc ... |

Quintillion | 1018 | |

Sextillion | 1021 | |

Septillion | 1024 | |

Octillion | 1027 | |

Nonillion | 1030 | |

Decillion | 1033 | |

Undecillion | 1036 | |

Duodecillion | 1039 | |

Tredecillion | 1042 | |

Quattuordecillion | 1045 | |

Quindecillion | 1048 | |

Sexdecillion | 1051 | |

Septemdecillion | 1054 | |

Octodecillion | 1057 | |

Novemdecillion | 1060 | |

Vigintillion | 1063 | 1 followed by 63 zeros! |

And a Googol is 1 complied with by one hundred zeros (10100) :

10,000,000,000,000,000,000,000,000,000,000,000,**000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000**

**Then there is the Googolplex**. That is 1 complied with by Googol zeros. I can"t also write down the number, due to the fact that there is not enough matter in the world to kind all the zeros:

10,000,000,000,000,000,000,000,000,000,000, ... (Googol number of Zeros)

And a **Googolplexian** is a 1 complied with by **Googolplex** **zeros**. Wow.

See more: Do You Know How To Say You Are Beautiful In Arabic, How Do You Say You Are So Beautiful In Arabic

**Name**

**As a strength of 10**

**As a Decimal**

thousandths | 10-3 | 0.001 |

millionths | 10-6 | 0.000 001 |

billionths | 10-9 | 0.000 000 001 |

trillionths | 10-12 | etc ... |

quadrillionths | 10-15 | |

quintillionths | 10-18 | |

sextillionths | 10-21 | |

septillionths | 10-24 | |

octillionths | 10-27 | |

nonillionths | 10-30 | |

decillionths | 10-33 | |

undecillionths | 10-36 | |

duodecillionths | 10-39 | |

tredecillionths | 10-42 | |

quattuordecillionths | 10-45 | |

quindecillionths | 10-48 | |

sexdecillionths | 10-51 | |

septemdecillionths | 10-54 | |

octodecillionths | 10-57 | |

novemdecillionths | 10-60 | |

vigintillionths | 10-63 |