1000 = 2 x	1000 : 2 =	5 x = 1000	1000 : 10 =
x 250 = 1000	1000 :  = 125	50 x  = 1000	1000 : 40 =
x 125 = 1000	250 = 1000 :	1000 = x 25	50 = 1000 :
2 x 250 =	200 = 4 x	4 x 500 =	2000 = 125 x
500 = x 125	200 : 8 =	2000 : = 200	3000 = x 500
250 : 2 =	400 : = 50	x 250 = 2000	4000 = x 250

x	100	4	104		x	12	100	112		x	100	20	120
3					3					4
6					4					8

2 x 108	=	2 x 100	+	2 x	=		+	16	=
7 x 130	=	( x 100)	+	( x 30)	=		+		=
3 x 209	=	(3 x )	+	( x )	=		+		=
415 x 2	=	(400 x )	+	(15 x	=		+		=
5 x 304	=	( x )	+	( x )	=		+		=

6 x 105 =	8 x 201 =	342 est la moitié de
210 x 3 =	: 8 = 202	est le triple de 208
= 9 x 109	: 5 = 22	125 est le quart de
= 24 x 4	: 7 = 103	est le double de 430.