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Commonly used prefixes for powers of 10 used with metric units are given below in Table 1.1.

Power | Prefix | Abbreviation |

10^{- 9} |
nano | n |

10^{- 6} |
micro | |

10^{- 3} |
milli | m |

10^{- 2} |
centi | c |

10^{- 1} |
deci | d |

10^{3} |
kilo | k |

10^{6} |
mega | M |

**For Example: **

a) 60,000 m = 6 `x` 10^{4} m = 60 km

b) 0.003 s = 3
`x` 10^{- 3} s = 3 ms

10/9/1997