train-train
a r i t h m é t i q u e
F E U I L L E D E R O U T E
( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) = ( ) ( ) =
(-3 ) - ( -1) = -2
(-2) - ( +1) = -4
dé « signe » dé « nombre »
point de départ point d’arrivée