题目内容
试题答案
(1)77°42′+34°45′=______;
(2)108°18′—56°23′=_______;
(3)180°—(34°54′+21°33′)=______.
(2)108°18′?6°23′=_______;
(3)180°?34°54′+21°33′)=______.
填空:
(1)77°42′+34°45′=_______;
(2)108°18′-56°23′=_______;
(3)180°-(34°54′+21°33′)=_______.