Выполните действия.
1)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}\mathrm{5,8}\\ \mathrm{6,7}\end{array}}\\ \begin{array}{r}\mathrm{}\end{array}\end{array}$
2)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}\mathrm{6,4 }\\ \mathrm{2,85}\end{array}}\\ \begin{array}{r}\mathrm{ }\end{array}\end{array}$
3)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}\mathrm{12 }\\ \mathrm{3,9}\end{array}}\\ \begin{array}{r}\mathrm{ }\end{array}\end{array}$
4)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}\mathrm{12,822}\\ \mathrm{34,51 }\end{array}}\\ \begin{array}{r}\mathrm{ }\end{array}\end{array}$
5)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}\mathrm{28,44}\\ \mathrm{18,58}\end{array}}\\ \begin{array}{r}\mathrm{ }\end{array}\end{array}$
6)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}\mathrm{17,5 }\\ \mathrm{8,36}\end{array}}\\ \begin{array}{r}\mathrm{ }\end{array}\end{array}$
7)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}\mathrm{10 }\\ \mathrm{3,82}\end{array}}\\ \begin{array}{r}\mathrm{ }\end{array}\end{array}$
8)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}\mathrm{5,4 }\\ \mathrm{2,573}\end{array}}\\ \begin{array}{r}\mathrm{ }\end{array}\end{array}$