500 − 500 : 2 + 160 * 3 = 730
(1000 − 625) : 5 + 63 * 8 = 579
42 : 3 * 8 + 160 − 296 : 8 = 235
7 * (281 − 156) − 6 * 135 : 5 = 713
Вычисления:
500 − 500 : 2 + 160 * 3 = 730
1)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}500\\ \phantom{0}\underset{¯}{4}\\ \underset{¯}{\phantom{0}}10\\ \phantom{0}\underset{¯}{10}\\ \phantom{00}\underset{¯}{\phantom{0}}0\\ \phantom{000}\underset{¯}{0}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)2}\\ \overline{\overline{)250}}\end{array}\end{array}$
2)

3)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}500\\ 250\end{array}}\\ \begin{array}{r}250\end{array}\end{array}$
4)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}250\\ 480\end{array}}\\ \begin{array}{r}730\end{array}\end{array}$
(1000 − 625) : 5 + 63 * 8 = 579
1)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}1000\\ 625\end{array}}\\ \begin{array}{r}375\end{array}\end{array}$
2)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}375\\ \phantom{0}\underset{¯}{35}\\ \phantom{0}\underset{¯}{\phantom{0}}25\\ \phantom{00}\underset{¯}{25}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)5}\\ \overline{\overline{)75}}\end{array}\end{array}$
3)

4)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}75\\ 504\end{array}}\\ \begin{array}{r}579\end{array}\end{array}$
42 : 3 * 8 + 160 − 296 : 8 = 235
1)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}42\\ \phantom{0}\underset{¯}{3}\\ \underset{¯}{\phantom{0}}12\\ \phantom{0}\underset{¯}{12}\\ \phantom{00}0\end{array}& \begin{array}{l}\overline{)3}\\ \overline{\overline{)14}}\end{array}\end{array}$
2)

3)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}296\\ \phantom{0}\underset{¯}{24}\\ \phantom{0}\underset{¯}{\phantom{0}}56\\ \phantom{00}\underset{¯}{56}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)8}\\ \overline{\overline{)37}}\end{array}\end{array}$
4)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}112\\ 160\end{array}}\\ \begin{array}{r}272\end{array}\end{array}$
5)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}272\\ 37\end{array}}\\ \begin{array}{r}235\end{array}\end{array}$
7 * (281 − 156) − 6 * 135 : 5 = 713
1)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}281\\ 156\end{array}}\\ \begin{array}{r}125\end{array}\end{array}$
2)

3)

4)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}810\\ \phantom{0}\underset{¯}{5}\\ \underset{¯}{\phantom{0}}31\\ \phantom{0}\underset{¯}{30}\\ \phantom{0}\underset{¯}{\phantom{0}}10\\ \phantom{00}\underset{¯}{10}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)5}\\ \overline{\overline{)162}}\end{array}\end{array}$
5)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}875\\ 162\end{array}}\\ \begin{array}{r}713\end{array}\end{array}$