36×15=15×36=15×2×18=30×18=540回答完毕~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^)/~我不是学霸,叫我赌神~\(^o^)/~~\(^o^)/~~\(^o^)/~~\(^o^)/~
36x15 =36x(10+5) =36x10+36x5 =360+180 =540
=4×5×3×9=20×3×9=60×9=540
=(40-4)X15=600-60=540