5.66×99+56.6×0.1
问题描述：
5.66×99+56.6×0.1
答
35·6×0·8=28.48 3·56×12=42.72 28.48 42.72=71.2 35.6脳(8 12)=712 35.6×（0.8 1.2）=35.6×2=71.2 35·6
5.66×99+56.6×0.1
35·6×0·8=28.48 3·56×12=42.72 28.48 42.72=71.2 35.6脳(8 12)=712 35.6×（0.8 1.2）=35.6×2=71.2 35·6