Question

初二上册数学题.算式解答①45º30′=_______② 92°56′3〃-46°57′54〃=________③360

Answer 1

①45º30′=45.5°

② 92°56′3〃-46°57′54〃

=91°115′63〃-46°57′54〃

=45°58′9〃

③360°÷7=51°24′（精确到分）

④900〃=15′ =0.25 °

⑤15°39′=15.65°

⑥22°25′×6=134.52°

⑦100°50′3〃-45°57′54〃

=99°109′63〃-45°57′54〃

=54°52′9〃

⑧38°15′=38.25°

当然与38.15°不等,且38.25°>38.15°,所以38°15′大.