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SOLUÇÃO PASSO A PASSO
[tex] {10}^{0} + {10}^{ - 1} + {10}^{ - 2} + {10}^{ - 3} [/tex]
↑¹ Avalie as potências
↑² Reescreva
[tex]1 + \frac{1}{10} + \frac{1}{10 {}^{2} } + \frac{1}{ {10}^{3} } [/tex]
↑ Avalie
[tex]1 + \frac{1}{10} + \frac{1}{100} + \frac{1}{1000} [/tex]
↑ Calcule
[tex] \frac{111}{100} + \frac{1}{1000} [/tex]
↑ Calcule a soma dos valores
Formulário alternativo
[tex] 1\frac{111}{1000} \: ou \: \:\red{ 1.111}[/tex]