题目内容：

用简便方法计算：6×1.6+28.8×36.8-14.4×80

优质解答

6×1.6+28.8×36.8-14.4×80
=9.6(1+3×36.8-120)
=9.6(1+110.4-120)
=9.6×(-8.6)
=(10-0.4)×(-8.6)
=-86+3.44
=-82.56