357 : 21 − 165 : 15 = 6
600 − 600 : 30 + 18 * 13 = 814
913 − 18 * 24 : 27 = 897
336 : (178 − 15 * 10) = 12
814 : 37 + 754 : 58 = 35
900 : 75 * 38 + 144 − 49 * 12 = 12
(739 + 245) : 82 + 31 * 29 = 911
13 * (469 − 398) − 42 * 21 : 63 = 909
Вычисления:
357 : 21 − 165 : 15 = 6
1)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}357\\ \phantom{0}\underset{¯}{21}\\ \underset{¯}{\phantom{0}}147\\ \phantom{0}\underset{¯}{147}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)21}\\ \overline{\overline{)17}}\end{array}\end{array}$
2)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}165\\ \phantom{0}\underset{¯}{15}\\ \phantom{0}\underset{¯}{\phantom{0}}15\\ \phantom{00}\underset{¯}{15}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)15}\\ \overline{\overline{)11}}\end{array}\end{array}$
3)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}17\\ 11\end{array}}\\ \begin{array}{r}6\end{array}\end{array}$
600 − 600 : 30 + 18 * 13 = 814
1)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}600\\ \phantom{0}\underset{¯}{60}\\ \phantom{00}\underset{¯}{\phantom{0}}0\\ \phantom{000}\underset{¯}{0}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)30}\\ \overline{\overline{)20}}\end{array}\end{array}$
2)

3)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}600\\ 20\end{array}}\\ \begin{array}{r}580\end{array}\end{array}$
4)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}580\\ 234\end{array}}\\ \begin{array}{r}814\end{array}\end{array}$
913 − 18 * 24 : 27 = 897
1)

2)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}432\\ \phantom{0}\underset{¯}{27}\\ \underset{¯}{\phantom{0}}162\\ \phantom{0}\underset{¯}{162}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)27}\\ \overline{\overline{)16}}\end{array}\end{array}$
3)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}913\\ 16\end{array}}\\ \begin{array}{r}897\end{array}\end{array}$
336 : (178 − 15 * 10) = 12
1)

2)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}178\\ 150\end{array}}\\ \begin{array}{r}28\end{array}\end{array}$
3)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}336\\ \phantom{0}\underset{¯}{28}\\ \phantom{0}\underset{¯}{\phantom{0}}56\\ \phantom{00}\underset{¯}{56}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)28}\\ \overline{\overline{)12}}\end{array}\end{array}$
814 : 37 + 754 : 58 = 35
1)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}814\\ \phantom{0}\underset{¯}{74}\\ \phantom{0}\underset{¯}{\phantom{0}}74\\ \phantom{00}\underset{¯}{74}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)37}\\ \overline{\overline{)22}}\end{array}\end{array}$
2)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}22\\ 13\end{array}}\\ \begin{array}{r}35\end{array}\end{array}$
3)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}754\\ \phantom{0}\underset{¯}{58}\\ \underset{¯}{\phantom{0}}174\\ \phantom{0}\underset{¯}{174}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)58}\\ \overline{\overline{)13}}\end{array}\end{array}$
900 : 75 * 38 + 144 − 49 * 12 = 12
1)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}900\\ \phantom{0}\underset{¯}{75}\\ \underset{¯}{\phantom{0}}150\\ \phantom{0}\underset{¯}{150}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)75}\\ \overline{\overline{)12}}\end{array}\end{array}$
2)

3)

4)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}456\\ 144\end{array}}\\ \begin{array}{r}600\end{array}\end{array}$
5)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}600\\ 588\end{array}}\\ \begin{array}{r}12\end{array}\end{array}$
(739 + 245) : 82 + 31 * 29 = 911
1)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}739\\ 245\end{array}}\\ \begin{array}{r}984\end{array}\end{array}$
2)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}984\\ \phantom{0}\underset{¯}{82}\\ \underset{¯}{\phantom{0}}164\\ \phantom{0}\underset{¯}{164}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)82}\\ \overline{\overline{)12}}\end{array}\end{array}$
3)

4)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}12\\ 899\end{array}}\\ \begin{array}{r}911\end{array}\end{array}$
13 * (469 − 398) − 42 * 21 : 63 = 909
1)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}469\\ 398\end{array}}\\ \begin{array}{r}71\end{array}\end{array}$
2)

3)

4)
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}882\\ \phantom{0}\underset{¯}{63}\\ \underset{¯}{\phantom{0}}252\\ \phantom{0}\underset{¯}{252}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)63}\\ \overline{\overline{)14}}\end{array}\end{array}$
5)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}923\\ 14\end{array}}\\ \begin{array}{r}909\end{array}\end{array}$