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     .dsdem.gif (1088 octets)

     

    Préfixes et puissances de 10

     

     

     

    symbole abréviations du symbole valeur en puissance de 10
    yotta Y 1024 = 1 000 000 000 000 000 000 000 000
    zetta Z 1021 =        1 000 000 000 000 000 000 000
    exa E 1018 =                 1 000 000 000 000 000 000
    peta P 1015 =                        1 000 000 000 000 000
    téra T 1012 =                               1 000 000 000 000
    giga G 109 =                                       1 000 000 000
    méga M 106 =                                              1 000 000
    kilo k 103 =                                                     1 000
    hecto h 102 =                                                        100
    déca da 101 =                                                          10
       

    100 =                                                            1

    déci d

    10-1 =                                                           0, 1

    centi c 10-2 =                                                           0, 01
    milli m 10-3 =                                                           0, 001
    micro m 10-6 =                                                           0, 000 001
    nano n 10-9 =                                                           0, 000 000 001
    pico p 10-12 =                                                          0, 000 000 000 001
    femto f 10-15 =                                                          0, 000 000 000 000 001
    atto a 10-18 =                                                          0, 000 000 000 000 000 001
    zepto z 10-21 =                                                          0, 000 000 000 000 000 000 001
    yokto y 10-24 =                                                          0, 000 000 000 000 000 000 000 001

    voir  le nom des grands nombres et des très grands nombres (prendre une aspirine 20 minutes avant)