0.888乘1.6减0.222乘2.4 怎样简算不要高年级的

0.888*1.6-0.222*2.4
=0.888*1.6-0.222*(4*0.6)
=0.888*1.6-0.888*0.6
=0.888*(1.6-0.6)
=0.888*(1.0)=
0.888

0.888*1.6-0.222*2.4
=0.222*4*1.6-0.222*2.4
=0.222*6.4-0.222*2.4
=0.222*(6.4-2.4)
=0.222*4
=0.888