1.9+1.99+1.999简便计算求= =
问题描述:
1.9+1.99+1.999简便计算
求= =
答
=2-0.1+2-0.01+2-0.001=6-0.111=5.889
1.9+1.99+1.999简便计算
求= =
=2-0.1+2-0.01+2-0.001=6-0.111=5.889