\[Страница\ 11.\]
Вопрос (стр. 11)
\[\boxed{\mathbf{Вопрос}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[c = 6;\ \ \ d = 14:\]
\[c \cdot d = 6 \cdot 14 = 6 \cdot (10 + 4) =\]
\[= 6 \cdot 10 + 6 \cdot 4 = 60 + 24 = 84.\]
\[c = 24;\ \ \ d = 4:\]
\[c \cdot d = 24 \cdot 4 = (20 + 4) \cdot 4 =\]
\[= 20 \cdot 4 + 4 \cdot 4 = 80 + 16 = 96.\]
\[Лабиринт.\]
\[6 \cdot 3\ :2 = 9.\]
\[\boxed{\mathbf{1}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[c\] | \[48\] | \[30\] | \[1\] | \[24\] |
---|---|---|---|---|
\[d\] | \[12\] | \[43\] | \[89\] | \[6\] |
\[48 + 12 = 60\]
\[30 + 43 = 73\]
\[1 + 89 = 90\]
\[24 + 6 = 30\]
\[m\] | \[80\] | \[100\] | \[21\] | \[64\] |
---|---|---|---|---|
\[n\] | \[35\] | \[7\] | \[9\] | \[50\] |
\[80 - 35 = 45\]
\[100 - 7 = 93\]
\[21 - 9 = 12\]
\[64 - 50 = 14\]
\[\boxed{\mathbf{2}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[6 \cdot 11 + 6 = 66 + 6 = 72\]
\[9 \cdot 11 - 97 = 99 - 97 = 2\]
\[8 \cdot 8 - 4 \cdot 7 = 64 - 28 = 36\]
\[7 + 3 \cdot 9 = 7 + 27 = 34\]
\[24 + 60 - 83 = 84 - 83 = 1\]
\[86 - 16 + 25 = 70 + 25 = 95\]
\[\boxed{\mathbf{3}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[3 \cdot 9 = 27\ (м) - проезжая\ \]
\[часть.\]
\[3 \cdot 2 = 6\ (м) - два\ тротуара.\]
\[3 \cdot 9 + 3 \cdot 2 = 27 + 6 =\]
\[= 33\ (м) - ширина\ дороги.\]
\[\boxed{\mathbf{4}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ 2 \cdot 8 = 16\ (кг) - весят\ два\]
\[\ рюкзака.\]
\[2)\ 16 + 4 = 20\ (кг) - вес\ двух\ \]
\[чемоданов.\]
\[3)\ 20\ :2 = 10\ (кг) - масса\ \]
\[одного\ чемодана.\]
\[Ответ:10\ кг.\]