0.87×3.16+4.64的拖式计算.
问题描述:
0.87×3.16+4.64的拖式计算.
答
0.87x3.16+4.64
=(1-0.13)x3.16+4.64
=3.16-0.13x3.16+4.64
=7.8-0.4108
=7.3892