来自唐经洲的问题
简便计算2005×0.375-0.375×1949+3.75×2.4
简便计算
2005×0.375-0.375×1949+3.75×2.4
1回答
2020-06-1818:31
简便计算2005×0.375-0.375×1949+3.75×2.4
简便计算
2005×0.375-0.375×1949+3.75×2.4
2005×0.375-0.375×1949+0.375×24=0.375×(2005-1949+24)=0.375×80=30