1,2=12/10=6/5
[tex]0,(27)=\dfrac{27}{99}=\dfrac{3}{11}
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[tex]1,12(16)=\dfrac{11216-112}{9900}=\dfrac{11104}{9900}=\dfrac{926}{825}[/tex] (am simplificat prin 12
0,12+31/5=0,12+6,2=6,32
[tex]5,1(3)+\dfrac{11}{10}=\dfrac{513-51}{90}+\dfrac{11}{10}=\dfrac{462}{90}+\dfrac{11}{10}=\dfrac{462+99}{90}=\dfrac{561}{90}=\dfrac{187}{30}[/tex] (am simplificat prin 3.
3,5-1/8=3,5-0,125=3,375