\[\boxed{\mathbf{Страница\ 59.\ }\mathbf{Еуроки\ - \ ДЗ\ без\ мороки}}\]
\[\boxed{\mathbf{3.\ }}\]
\[\textbf{а)}\ 8 \cdot (15 - 12)\ :4 + 7 = 13\]
\[\textbf{б)}\ 1395\ :45 - 10 \cdot (170 - 140)\ :10 =\]
\[= 1\]
\[\boxed{\mathbf{4.\ }}\]
\[\textbf{а)}\ (45 \cdot 2)\ :(37 - 28) =\]
\[= 90\ :9 = 10\]
\[\textbf{б)}\ (48 + 52) \cdot (18 + 12) =\]
\[= 100 \cdot 30 = 3000\]
\[\textbf{в)}\ (85 - 27)\ :(7 + 22) =\]
\[= 58\ :29 = 2\]
\[\mathbf{16.\ Куб\ числа}\]
\[\boxed{\mathbf{Страница\ 59.\ }\mathbf{Еуроки\ - \ ДЗ\ без\ мороки}}\]
\[\boxed{\mathbf{1.\ }}\]
\[6^{3} = 6 \cdot 6 \cdot 6\]
\[11^{2} = 11 \cdot 11\]
\[9^{3} = 9 \cdot 9 \cdot 9\]
\[13^{2} = 13 \cdot 13\]
\[a^{2} = a \cdot a\]
\[b^{3} = b \cdot b \cdot b\]
\[x^{2} = x \cdot x\]
\[y^{3} \cdot y \cdot y \cdot y\]