Question

Transformati urmatoarele numere rationale in fractii ordinare ireductibile : 

a) 1,2 b) 0,(27) c) 1,12(16)  

Calculati si scrieti rezulatul ca fractie ireductibila: 

a) 0,12+3 1/5 b) 5,1(3)+1 1/10 c) 3,5-1 3/8   

Unde este 1/5 inseamna 1 supra 5 adica 1 bara si sub el 5 

Answer 1

1,2=12/10=6/5

[tex]0,(27)=\dfrac{27}{99}=\dfrac{3}{11} [/tex]

$1,12(16)=\dfrac{11216-112}{9900}=\dfrac{11104}{9900}=\dfrac{926}{825}$ (am simplificat prin 12

0,12+31/5=0,12+6,2=6,32

$5,1(3)+\dfrac{11}{10}=\dfrac{513-51}{90}+\dfrac{11}{10}=\dfrac{462}{90}+\dfrac{11}{10}=\dfrac{462+99}{90}=\dfrac{561}{90}=\dfrac{187}{30}$ (am simplificat prin 3.

3,5-1/8=3,5-0,125=3,375