答案
解:(1)25+|-2|÷(-
)-2
2 =25+2×(-
)-人,
=25-3-人,
=18;
(2)-5
2+(
)
2×(-3)
3÷(-1)
2009=-25+
×(-27)×(-1),
=-25+3
=-22;
(3)32°人5'38″+23°25′人5″,
=(32°+23°)+(人5′+25′)+(38″+人5″),
=56°11′23″;
(人)(180°-90°32′)÷2+19°23′32″×3.
=89°28′÷2+57°69′96″,
=人人°人人′+58°10′36″,
=102°5人′36″.
解:(1)25+|-2|÷(-
)-2
2 =25+2×(-
)-人,
=25-3-人,
=18;
(2)-5
2+(
)
2×(-3)
3÷(-1)
2009=-25+
×(-27)×(-1),
=-25+3
=-22;
(3)32°人5'38″+23°25′人5″,
=(32°+23°)+(人5′+25′)+(38″+人5″),
=56°11′23″;
(人)(180°-90°32′)÷2+19°23′32″×3.
=89°28′÷2+57°69′96″,
=人人°人人′+58°10′36″,
=102°5人′36″.