50×0.25×0.2简算和1.25×0.25×0.2和6.08×99+6.8
问题描述：
50×0.25×0.2简算和1.25×0.25×0.2和6.08×99+6.8
答
50×0.25×0.2
=50×0.2×0.25
=10×0.25
=2.5
1.25×0.25×0.2
=1.25×0.2×0.25
=0.25×0.25
=0.0625
6.08×99+6.8
=6.08×（99+1）+0.72
=608.72有没有其他方法？？全部都是简便方法