6.9+0.1-6.9+0.1简便计算
问题描述:
6.9+0.1-6.9+0.1简便计算
答
6.9+0.1-6.9+0.1
=6.9-6.9+0.1+0.1
=0.2
6.9+0.1-6.9+0.1简便计算
6.9+0.1-6.9+0.1
=6.9-6.9+0.1+0.1
=0.2