2.2*2.4+1.6*1.7=?要写出计算过程,还要简便的!
问题描述：
2.2*2.4+1.6*1.7=?要写出计算过程,还要简便的!
答
2.2*2.4+1.6*1.7
=2.2*3*0.8+0.8*2*1.7
=6.6*0.8+0.8*3.4
=0.8*(6.6+3.4)
=0.8*10
=8