\[\boxed{\mathbf{Стр.\ 7.\ }еуроки - ответы\ на\ пятёрку}\]
\[\boxed{\mathbf{11.}}\]
\[9 \cdot 4 + 14\ :2 = 36 + 7 = 43\]
\[7 \cdot 9 - 30\ :3 = 63 - 10 = 53\]
\[42\ :7 \cdot 9 + 8 = 54 + 8 = 62\]
\[36\ :4 \cdot (17 - 9) = 9 \cdot 8 = 72\]
\[6 \cdot (11 - 8) + 52 = 18 + 52 =\]
\[= 70\]
\[63\ :7 \cdot (12 - 4) = 9 \cdot 8 = 72\]
\[\boxed{\mathbf{12.}}\]
\[60 - 30\ :3 = 60 - 10 = 50\]
\[(50 - 5)\ :9 = 45\ :9 = 5\]
\[70 + 28\ :7 = 70 + 4 = 74\]
\[56\ :8 \cdot 7 = 7 \cdot 7 = 49\]
\[8 \cdot 6 + 52 = 48 + 52 = 100\]
\[63\ :(13 - 6) = 63\ :7 = 9\]
\[84 + 14 = 98\]
\[90\ :10 = 9\]
\[8 \cdot 10 = 80\]
\[\boxed{\mathbf{13.}}\]
\[1)\ 9 \cdot 2 = 18\ (грядок) -\]
\[клубники\ пропололи\ сестры.\]
\[2)\ 24 - 18 = 6\ (грядок) -\]
\[клубники\ прополол\ брат.\]
\[Ответ:6\ грядок.\]