Question

faça o cálculo dessa operação

26,45÷5​

Answer 1

Resposta:

5,29

Explicação passo a passo:

26,45 : 5

2645    |__500

-2500        5,29

   1450

   1000

     4500

     4500

         0

1-multiplique os 2 números por 100, assim elimina a virgula para ter visão do calculo

2) 500 x 5 = 2500, subrair do total, sobra 145.

3) 145 não é divisível por 5, então acrescenta um zero e coloca virgula após o 5 ;

4) veja quantas vezes caberia o numero 500 em 1450. Se multiplicar por 2 = 1000 e por 3=1500, então tem que ser 2;

5) acreste o zero a sobra, e ai o numero é 9.

Answer 2

$\frac{26.45}{5}\\\\\mathrm{Escrever\:o\:problema\:no\:formato\:de\:divisao\:longa}\\\\\begin{matrix}5\overline{|\smallspace26.45}\space\space\space\space\space\space\space\end{matrix}\\\\\mathrm{Dividir}\:26\:\mathrm{por}\:5\:\mathrm{para\:obter}\:5\\\\\begin{matrix}\space\space\space\space\space\space\emptyspace5\space\space\space\space\space\space\space\space\space\space\space\space\\ 5\overline{|\smallspace26.45}\space\space\space\space\space\space\space\end{matrix}$

$\mathrm{Multiplicar\:o\:digito\:do\:quociente}\:\left(5\right)\:\mathrm{pelo\:divisor}\:5\\\\\begin{matrix}\space\space\space\space\space\space\emptyspace5\space\space\space\space\space\space\space\space\space\space\space\space\\ 5\overline{|\smallspace26.45}\space\space\space\space\space\space\space\\ \space\space\space\space\underline{\emptyspace2\emptyspace5}\space\space\space\space\space\space\space\space\space\space\space\space\end{matrix}\\\\\mathrm{Subtrair}\:25\:\mathrm{de}\:26$

$\begin{matrix}\space\space\space\space\space\space\emptyspace5\space\space\space\space\space\space\space\space\space\space\space\space\\ 5\overline{|\smallspace26.45}\space\space\space\space\space\space\space\\ \space\space\space\space\underline{\emptyspace2\emptyspace5}\space\space\space\space\space\space\space\space\space\space\space\space\\ \space\space\space\space\space\space\emptyspace1\space\space\space\space\space\space\space\space\space\space\space\space\end{matrix}$

$\mathrm{Acrescentar\:ponto\:decimal\:na\:solucao}\\\\\mathrm{Abaixar\:o\:seguinte\:numero\:do\:dividendo}$

$\begin{matrix}\space\space\space\space\space\space\emptyspace5.\space\space\space\space\space\space\space\space\space\space\space\\ 5\overline{|\smallspace26.45}\space\space\space\space\space\space\space\\ \space\space\space\space\underline{\emptyspace2\emptyspace5}\space\space\space\space\space\space\space\space\space\space\space\space\\ \space\space\space\space\space\space\emptyspace1\emptyspace4\space\space\space\space\space\space\space\space\space\space\end{matrix}$

$\mathrm{Dividir}\:14\:\mathrm{por}\:5\:\mathrm{para\:obter}\:2$

$\begin{matrix}\space\space\space\space\space\space\emptyspace5.\emptyspace2\space\space\space\space\space\space\space\space\space\\ 5\overline{|\smallspace26.45}\space\space\space\space\space\space\space\\ \space\space\space\space\underline{\emptyspace2\emptyspace5}\space\space\space\space\space\space\space\space\space\space\space\space\\ \space\space\space\space\space\space\emptyspace1\emptyspace4\space\space\space\space\space\space\space\space\space\space\end{matrix}$

$\mathrm{Multiplicar\:o\:digito\:do\:quociente}\:\left(2\right)\:\mathrm{pelo\:divisor}\:5$

$\mathrm{Subtrair}\:10\:\mathrm{de}\:14\\ 14\\10\\04$

$\mathrm{Abaixar\:o\:seguinte\:numero\:do\:dividendo}$

$,45$

$\mathrm{Dividir}\:45\:\mathrm{por}\:5\:\mathrm{para\:obter}\:9$

$\mathrm{Multiplicar\:o\:digito\:do\:quociente}\:\left(9\right)\:\mathrm{pelo\:divisor}\:5$

$\mathrm{Subtrair}\:45\:\mathrm{de}\:45\\=0$

$\mathrm{A\:solucao\:para\:a\:divisao\:longa\:de}\:\frac{26.45}{5}\:\mathrm{e}\:5.29$