frarzh-CNzh-TWcsendeeliwiditjakolvplptruessvthtruk

Réduction d'écritures additives du type: tant de fois un nombre. 

 Exemples:

 23+23+23+23+23+23+23+23+23+23     =

  46     +    46   +    46  +   46   +    46     =

          92           +        92           +   46    =

                       184                     +    46   =

                                                230
                                                                          

18+18+18+18+18+18+18+18+18+18 =

  36    +   36   +   36   +   36  +   36   =

         72         +        72        +    36  =

                    144                  +    36  =

                                            180

                

                                                34  + 34 + 34 + 34 + 34 + 34 + 34 + 34 + 34 + 34 =

                                                   \    /         \   /          \    /        \     /        \    /

                                                     68     +     68     +    68     +    68     +    68     =

                                                         \         /                   \        /                |

                                                            136            +          136            +     68    =

                                                                   \                  /                           |

                                                                           272                           +    68     =

                                                                                     \                         /

                                                                                                        340

                                      

 

 

Moralité : 10 fois un nombre c'est facile.

10 fois 23 = 230 et  230 = 23 fois 10, 
10 fois 18 = 180 et 180  = 18 fois 10 ,
10 fois 34 = 340 et 340 = 34 fois 10