4.06×55×27简便计算
问题描述:
4.06×55×27简便计算
答
4.06×55×27
=2.03×(2×55)×27
=2.03×(110×27)
=2.03×2970
=2.03×3000-2.03×30
=6090-60.9
=6029.1