25/100=5*5/5*20=0.25
20/100=2*10/10*10=0.2
50/100=5*10/10*10=0.5
45/100=9*5/5*20=(9/20):2=4.5/10=0.45
12/100=1.2/10=1.2
25/100=5*5/5*20=0.25
20/100=2*10/10*10=0.2
50/100=5*10/10*10=0.5
45/100=9*5/5*20=(9/20):2=4.5/10=0.45
12/100=1.2/10=1.2