1 столбец:
1,3 + 7 = 8,3
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}\mathrm{1,3}\\ \mathrm{7,0}\end{array}}\\ \begin{array}{r}\mathrm{8,3 }\end{array}\end{array}$
2 столбец:
8 − 0,6 = 7,4
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}\mathrm{8,0}\\ \mathrm{0,6}\end{array}}\\ \begin{array}{r}\mathrm{7,4 }\end{array}\end{array}$
3 столбец:
6,55 − 2,5 = 4,05
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}\mathrm{6,55}\\ \mathrm{2,5}\end{array}}\\ \begin{array}{r}\mathrm{4,05 }\end{array}\end{array}$
4 столбец:
0,12 + 1,8 = 1,92
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}\mathrm{0,12}\\ \mathrm{1,80}\end{array}}\\ \begin{array}{r}\mathrm{1,92 }\end{array}\end{array}$
5 столбец:
19 − 8,1 = 10,9
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}\mathrm{19,0}\\ \mathrm{8,1}\end{array}}\\ \begin{array}{r}\mathrm{10,9 }\end{array}\end{array}$
6 столбец:
20 − 4,35 = 15,65
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}\mathrm{20,00}\\ \mathrm{4,35}\end{array}}\\ \begin{array}{r}\mathrm{15,65 }\end{array}\end{array}$
Ответ: