\[\boxed{\mathbf{559\ (559).}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ 9,486 \approx 9,5\]
\[12,78 \approx 12,8\]
\[0,5498 \approx 0,5\]
\[10,333 \approx 10,3\]
\[1,89 \approx 1,9\]
\[2)\ 3,405 \approx 3,41\]
\[4,326 \approx 4,33\]
\[82,2048 \approx 82,20\]
\[0,2349 \approx 0,23\]
\[0,999 \approx 1,00\]
\[3)\ 0,6372 \approx 0,637\]
\[2,2981 \approx 2,298\]
\[6,55555 \approx 6,556\]
\[4,6767 \approx 4,677\]
\[\boxed{\mathbf{559.}\mathbf{\ }}\]
\[= (54 + 29 + 36)\ :7 =\]
\[= 119\ :7 = 17{^\circ}С - среднее\ \]
\[значение\ измерений.\]
\[Ответ:17{^\circ}С.\]