3.4*6.7+3.3*6.6=3.4*6.7+3.3*3.4+3.3*3.2=3.4*10+3.3*3.2=34+10.56=44.56手机打的乘号凑合看吧
3.4*6.7+3.3*6.6=(10-6.6)*6.7+3.3*6.6=67-3.4*6.6=67-22.44=44.56
不能
（3.3+0.1）乘（6.6+0.1）+3.3乘6.6
