48°39′+68°21′-21°17′×5
计算:(1)48°39′+67°31′(2)180°-21°17′×5
计算:48°39′+67°31′-21°17′×5=______.
计算:48°39′+67°41′=______;90°-78°19′40″=______;21°17′×5=______
56°21′-36°30′ = 48°39′+36°30′=?
计算:(1)48°39′+67°31′(2)21°17′×4+176°52′÷3.
计算(1)58°39′+67°33′-21°17′*5(2)109°11′4″/7
21°17′×5等于几?
21°17′×5等于多少
48°28′+69°27′ 64°5′-59°36′47〃 21°32′*5 46.8°/6
30°19′21〃+15°40′42〃要过程 90°-68°17′50〃 40.82° ------°------′--
77°52′+32°43′-21°17′=________
13°23′-7°15′25〃 21°17′16〃×5