解答:75×24=75×(20+4)=75×20+75×4=1500+300=1800
75x24 = 3x25x4x6 = 3x100x6 = 1800
75×24=75*(20+4)=75*20+75*4=1500+300=1800
75×24=75×(20+4)=75×20+75×4=1500+300=1800 OK
70*24+5*24=1680+120=1800