8.1乘(9减0.9)简便计算
问题描述:
8.1乘(9减0.9)简便计算
答
8.1×(9-0.9)
=72.9-7.29
=65.61
8.1乘(9减0.9)简便计算
8.1×(9-0.9)
=72.9-7.29
=65.61