Question

Escreva os números decimais abaixo na forma de fração irredutível. a) 7,04 d) 1,72 b) 0,07= c) 0,072 e) 0,05 f) 0,25.​

Answer 1

Resposta:

$a)~~7,04=\dfrac{704}{100}=\dfrac{704:4}{100:4}=\boxed{\dfrac{176}{25}}\\ \\ \\ b)~~0,07=\boxed{\dfrac{7}{100}}\\ \\ \\ c)~~~0,072=\dfrac{72}{1000}=\dfrac{72:8}{1000:8}=\boxed{\dfrac{9}{125}}\\ \\ \\ d)~~1,72=\dfrac{172}{100}=\dfrac{172:4}{100:4}=\boxed{\dfrac{43}{25}}$

$e)~~0,05=\dfrac{5}{100}=\dfrac{5:5}{100:5}=\boxed{\dfrac{1}{20}}\\ \\ \\ f)~~~0,25=\dfrac{25}{100}=\dfrac{25:25}{100:25}=\boxed{\dfrac{1}{4}}$