1.25×16×0.79×2.5 简便方法做
问题描述:
1.25×16×0.79×2.5 简便方法做
答
1.25×16×0.79×2.5=(1.25×8)×(2.5×2)×0.79=50×0.79=39.5
1.25×16×0.79×2.5 简便方法做
1.25×16×0.79×2.5=(1.25×8)×(2.5×2)×0.79=50×0.79=39.5