Преобразуйте в десятичную дробь1\2. 5\8. 19\25.19\8. 47\200

1) 1/2= 0,5; 5/8 =0,625; 19/25=0,76; 19/8= 2,375; 47/200=0,235.

1/2=(1 ∙5)/(2 ∙5 )=5/10=0,5;     

5/8=(5 ∙125)/(8 ∙125)=625/1000=0,625  

19/25=(19 ∙4)/(25 ∙4)=76/100=0,76  

19/8=(19 ∙125)/(8 ∙125)=2375/1000=2,375   

47/200=(47 ∙5)/(200 ∙5)=235/1000=0,235