3.6x0.8x0.5简便计算=3.6x(0.8x0.5)=3.6x0.4=1.44
3.6×0.8×0.5=3.6×（0.8×0.5）=3.6×0.4=14.4
g
请参考
3.6x0.8x0.5=3.6x(0.8x0.5)=3.6x0.4=1.44
