\[\boxed{\mathbf{Страница}\mathbf{\ 44}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\boxed{\mathbf{154}\mathbf{.}\mathbf{\ }}\]
\[284,\ 248,\ 428,\ 482,\ 824,\ 842.\]
\[350,\ 305,\ 503,\ 530.\]
\[607,\ 670,\ 706,\ 760.\]
\[\boxed{\mathbf{155}\mathbf{.}\mathbf{\ }}\]
\[Выполните\ практическое\ \]
\[задание\ самостоятельно.\]
\[\boxed{\mathbf{156}\mathbf{.}}\]
\[25 \cdot 4 = 4 \cdot 25\]
\[1000 \cdot 5 = 5 \cdot 1000\]
\[(2 \cdot 9) \cdot 7 = 7 \cdot (2 \cdot 9)\]
\[(3 \cdot 6) \cdot 9 = 9 \cdot (3 \cdot 6)\]
\[\boxed{\mathbf{157}\mathbf{.}\mathbf{\ }}\]
\[(3 \cdot 2) \cdot 8 = 3 \cdot (2 \cdot 8)\]
\[6 \cdot (4 \cdot 2) = (6 \cdot 4) \cdot 2\]