\[Страница\ 15.\]
Вопрос (стр. 15)
\[\boxed{\mathbf{Вопрос}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[96\ :4 = 24\]
\[4 \cdot 24 = 96\]
\[96\ :24 = 4\]
Продолжи ряд чисел (стр. 15)
\[\boxed{\mathbf{Продолжи}\mathbf{\ }\mathbf{ряд}\mathbf{\ }\mathbf{чисел}\mathbf{\ (}\mathbf{поля}\mathbf{)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1 \rightarrow 4\ \ \ \ \ \ \ \ \ \ 1 \cdot 0 + 4 = 4\]
\[2 \rightarrow 7\ \ \ \ \ \ \ \ \ \ 2 \cdot 1 + 5 = 7\]
\[3 \rightarrow 12\ \ \ \ \ \ \ 3 \cdot 2 + 6 = 12\]
\[4 \rightarrow 19\ \ \ \ \ \ \ 4 \cdot 3 + 7 = 19\]
\[5 \rightarrow 28\ \ \ \ \ \ \ 5 \cdot 4 + 8 = 28\]
\[6 \rightarrow 39\ \ \ \ \ \ \ 6 \cdot 5 + 9 = 39\]
\[\boxed{\mathbf{1}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[40\ :8 = 5\]
\[8 \cdot 5 = 40\]
\[40\ :5 = 8\]
\[27\ :9 = 3\]
\[9 \cdot 3 = 27\]
\[27\ :3 = 9\]
\[56\ :7 = 8\]
\[7 \cdot 8 = 56\]
\[56\ :8 = 7\]
\[54\ :6 = 9\]
\[6 \cdot 9 = 54\]
\[54\ :9 = 6\]
\[\boxed{\mathbf{2}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[Чему\ равен\ путь\ гусеницы?\]
\[3 \cdot 4 = 12\ (дм) - путь\]
\[\ гусеницы.\]
\[Ответ:12\ дм.\]
\[\boxed{\mathbf{3}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ 28\ :4 = 7\ (кг) - вишни\ в\ \]
\[одном\ пакете.\]
\[2)\ 7 \cdot 3 = 21\ (кг) - вишни\ в\ \]
\[трех\ пакетах.\]
\[3)\ 7 \cdot 7 = 49\ (кг) - вишни\ в\]
\[\ семи\ пакетах.\]
\[4)\ 7 \cdot 10 = 70\ (кг) - вишни\ в\]
\[\ десяти\ пакетах.\]
\[Ответ:\ \ 21\ кг;\ \ 49\ кг.\]
\[\boxed{\mathbf{4}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[96\ :3 = (90 + 6)\ :3 = 90\ :3 +\]
\[+ 6\ :3 = 30 + 2 = 32\]
\[96\ :6 = (60 + 36)\ :6 = 60\ :6 +\]
\[+ 36\ :6 = 10 + 6 = 16\]
\[96\ :2 = (80 + 16)\ :2 =\]
\[= 80\ :2 + 16\ :2 = 40 + 8 = 48\]
\[96\ :4 = (80 + 16)\ :4 = 80\ :\]
\[:4 + 16\ :4 = 20 + 4 = 24\]
\[\boxed{\mathbf{5}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[75\ :5 = (50 + 25)\ :5 = 50\ :5 +\]
\[+ 25\ :5 = 10 + 5 = 15\]
\[75\ :3 = (60 + 15)\ :3 =\]
\[= 60\ :3 + 15\ :3 = 20 + 5 = 25\]
\[42\ :3 = (30 + 12)\ :3 =\]
\[= 30\ :3 + 12\ :3 = 10 + 4 = 14\]
\[42\ :2 = (40 + 2)\ :2 = 40\ :2 +\]
\[+ 2\ :2 = 20 + 1 = 21\]
\[36\ :3 = (30 + 6)\ :3 = 30\ :3 +\]
\[+ 6\ :3 = 10 + 2 = 12\]
\[36\ :2 = (20 + 16)\ :2 =\]
\[= 20\ :2 + 16\ :2 = 10 + 8 = 18\]
\[99\ :9 = (90 + 9)\ :9 = 90\ :9 +\]
\[+ 9\ :9 = 10 + 1 = 11\]
\[72\ :4 = (40 + 32)\ :4 =\]
\[= 40\ :4 + 32\ :4 = 10 + 8 = 18\]
\[60\ :4 = (40 + 20)\ :4 =\]
\[= 40\ :4 + 20\ :4 = 10 + 5 = 15\]
\[60\ :5 = (50 + 10)\ :5 =\]
\[= 50\ :5 + 10\ :5 = 10 + 2 = 12\ \]
\[\boxed{\mathbf{6}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ (12\ :3 + 4) \cdot 5 =\]
\[= (4 + 4) \cdot 5 = 8 \cdot 5 = 40\]
\[2)\ 12\ :3 \cdot 4 \cdot 5 = 4 \cdot 4 \cdot 5 =\]
\[= 16 \cdot 5 = 80\]