6.18*9.9 0.618用简便的方法怎么计算
问题描述:
6.18*9.9 0.618用简便的方法怎么计算
答
6.18*9.9+ 0.618
=6.18*9.9+6.18*0.1
=6.18*(9.9+1)
=6.18*10
=61.8