9600➗25✖️4=9600x4/25【分子分母同乘以4】=9600x4x4/100 =96x16=(100-4)x16=1600-64=1536
9600➗25✖️4=4X96X100➗25=4X4X96=16X100-16X4=1600-64=1536
9600/(25*4)=9600/100=96
=(96*100)/25*4=96*4*4=1536