exo 1
a ) 10/100 = 1/10
b) 20/100 =1/5
c) 25/100 = 1/4
d) 50/100= 1/2
e) 75/100 = 3/4
f = 100/100 = 1
exo 2
50x 1/100 = 50/100 = 1/2
60 x 50/100 = 3000/100 = 30
7 x 100/100= 700 /100 = 7
650 x 0.1 = 650/10 = 65
250 x 10/100 = 2500/100=25
400 x 25/100 = 400 x 1/4 = 400/4 =100
15.4 x 0 = 0
15 x 200/100 =15 x 2 = 30
4.4 x 75/100 = 4.4 x 3/4 = 13.2/4
8 x 150/100 = 8x15/10 = 120/10 = 12
