3.4乘6.7加3.3乘6.6的能否简便计算
问题描述:
3.4乘6.7加3.3乘6.6的能否简便计算
答
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
答
(3.3+0.1)乘(6.6+0.1)+3.3乘6.6
答
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
答
不能