简便计算题:0.67×99+0.67=
问题描述:
简便计算题:0.67×99+0.67=
答
原式=0.67×99+0.67×1=0.67×(99+1)=0.67×100=67
答
0.67×99+0.67
=0.67×(99+1)
=0.67×100
=67