第1个回答 2018-12-18
=15.25x4+1.75÷1/4 =(15.25+1.75)x4 =17x4 =68
第2个回答 2018-01-02
原式=(15+0.25)x4+(1+0.75)除以0.25
=(60+1)+(4+3)
=61+7
=68
第3个回答 2018-01-02
15.25×4+1.75÷(1/4)
=15.25×4+1.75×4
=4×(15.25+1.75)
=4×17
=68
第4个回答 2018-01-02
15.25x4+1.75÷0.25
=15.25x4+1.75x4
=(15.25+1.75)x4
=17x4
=68