Условие:

Вычисли.
(5 + 7) : 3
(16 − 1) : 3
(4 + 1) * 3
(10 − 2) * 3
(56 − 47) : 3
(6 * 3) : 2

(5 + 7) : 3 = 4
(16 − 1) : 3 = 5
(4 + 1) * 3 = 15
(10 − 2) * 3 = 24
(56 − 47) : 3 = 3
Вычисления:
(5 + 7) : 3 = 12 : 3 = 4
(16 − 1) : 3 = 15 : 3 = 5
(4 + 1) * 3 = 5 * 3 = 15
(10 − 2) * 3 = 8 * 3 = 24
(56 − 47) : 3 = 9 : 3 = 3
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}56\\ 47\end{array}}\\ \begin{array}{r}9\end{array}\end{array}$
(6 * 3) : 2 = 18 : 2 = 9