\[Страница\ 35.\]
\[\boxed{\mathbf{3}.}\]
\[\boxed{\mathbf{4}.}\]
\[1)\ 8 \cdot 125 = 1000\]
\[2)\ 3304 - 1000 = 2304\]
\[3)\ 817\ :19 = (760 + 57)\ :19 =\]
\[= 40 + 3 = 43\]
\[4)\ 43 - 34 = 9\]
\[5)\ 2304\ :9 = 256\]