3509 + 45845 = 49354
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}45845\\ 3509\end{array}}\\ \begin{array}{r}49354\end{array}\end{array}$
Проверка:
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}49354\\ 3509\end{array}}\\ \begin{array}{r}45845\end{array}\end{array}$
 
50102 − 6945 = 43157
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}50102\\ 6945\end{array}}\\ \begin{array}{r}43157\end{array}\end{array}$
Проверка:
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}43157\\ 6945\end{array}}\\ \begin{array}{r}50102\end{array}\end{array}$
 
7306 * 4 = 29224
$\begin{array}{r}\times \underset{¯}{\begin{array}{r}7306\\ 4\end{array}}\\ 29224\end{array}$
Проверка:
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}29224\\ \phantom{0}\underset{¯}{28}\\ \phantom{0}\underset{¯}{\phantom{0}}12\\ \phantom{00}\underset{¯}{12}\\ \phantom{000}\underset{¯}{\phantom{0}}2\\ \phantom{0000}\underset{¯}{0}\\ \phantom{000}\underset{¯}{\phantom{0}}24\\ \phantom{0000}\underset{¯}{24}\\ \phantom{00000}0\end{array}& \begin{array}{l}\overline{)4}\\ \overline{\overline{)7306}}\end{array}\end{array}$
 
87540 : 6 = 14590
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}87540\\ \phantom{0}\underset{¯}{6}\\ \underset{¯}{\phantom{0}}27\\ \phantom{0}\underset{¯}{24}\\ \phantom{0}\underset{¯}{\phantom{0}}35\\ \phantom{00}\underset{¯}{30}\\ \phantom{00}\underset{¯}{\phantom{0}}54\\ \phantom{000}\underset{¯}{54}\\ \phantom{0000}\underset{¯}{\phantom{0}}0\\ \phantom{00000}\underset{¯}{0}\\ \phantom{00000}0\end{array}& \begin{array}{l}\overline{)6}\\ \overline{\overline{)14590}}\end{array}\end{array}$
Проверка:
$\begin{array}{r}\times \underset{¯}{\begin{array}{r}14590\\ 6\end{array}}\\ 87540\end{array}$