Question

8,40÷1,2 preciso da conta montada

Answer 1

$\Large\boxed{\begin{array}{l}\sf8,40\div1,2\\\sf vamos\,igualar\,o\,n\acute umero\\\sf de\,casas\,decimais\\\sf 8,40\div1,20\\\sf 8,40|\underline{1,20}\\\sf eliminando\,a\,v\acute irgula\,temos:\\\sf~\,~840|\underline{120}\\\sf-\underline{840}~~7\\\sf~~~~0\\\sf portanto\\\sf 8,40\div1,2=7\end{array}}$