Question

reprezentati sub forma de fractie ordinara fiecare dintre urmatoarele numere 4,8 , 9,2 , 0,0012 , 0, (1) , 0,(12) , 2,(34) , 3,(14) , 0,23(15) , 1,5(14) , 12,0(12)

Answer 1

Răspuns:

$4,8=\frac{48}{10}\\9,2\frac{92}{10}\\0,0012=\frac{12}{1000}\\0,(1)=\frac{1}{9}\\0.(12)=\frac{12}{99}\\2,(34)=\frac{234-2}{99}=\frac{232}{99}\\3,(14)=\frac{314-3}{99}=\frac{311}{99}\\0,23(15)=\frac{2315-23}{9900}=\frac{2292}{9900}\\1,5(14)=\frac{1514-15}{990}=\frac{1499}{990}\\12,0(12)=\frac{12012-120}{990}=\frac{11892}{990}$

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