0.48*99怎样简便计算
问题描述:
0.48*99怎样简便计算
答
=0.48*(100-1)
=0.48*100-0.48
=48-0.48
=47.525.89*0.5*4*0.5简便计算怎么算5.89*0.5*4*0.5=5.89*0.5*2*2*0.5=5.89*(0.5*2)*(2*0.5)=5.89*1*1=5.89