题目: 260×(6+3)○260×6+3,圆圈里应填( )A.>B.<C.= 答案: 260×(6+3),=260×9,=2340;260×6+3,=1560+3,=1563;2340>1563;所以:260×(6+3)>260×6+3;故选:A.