这道数学题怎样简便计算66.6*7.23+99.9*5.18
问题描述：
这道数学题怎样简便计算
66.6*7.23+99.9*5.18
答
33.3*2*7.23+33.3*3*5.18
=33.3*(2*7.23+3*5.18)
=33.3*(14.46+15.54)
=33.3*30
=999
答
66.6*7.23+99.9*5.18
=33.3*2*7.23+33.3*3*5.18
=33.3*（14.46+15.54）
=33.3*30
=999
答
11.1*(6*7.23)+11.1*(9*5.18)
11.1*(43.38+46.62)
11.1*90
999