5.6*2.9-5.6+8.1*5.6巧算
问题描述:
5.6*2.9-5.6+8.1*5.6巧算
答
5.6*2.9-5.6+8.1*5.6
=5.6*(2.9-1+8.1)
=5.6*10
=56