0.888乘以2?
0.888乘以2.4减0.222乘以1.6最简便方法
原式=0.888*2.4-0.222*1.6=0.222*0.8(4*3-2)=0.222*0.8*10=0.222*8=1.776
0.888*2.4-0.222*1.6=0.888*2.4-0.888*1.6/4=0.888*2.4-0.888*0.4==0.888*2=1.776
答:0.888乘1.6减0.222乘2.4 =0.222*0.8*(4*2-3) =0.222*0.8*5 =0.222*4 =0.888详情>>
答:详情>>