4.6x0.18 1.8x0.54=4.6×0.18 0.18×5.4=(4.6 5.4)×0.18=10×0.18=1.8有疑问请追问,我一定尽快回复你~无疑问请点击【采纳】,同时预祝学习进步~\(^o^)/~