简便计算 2005×0.375-0.375×1949+3.75×2.4
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 12:47:56
![简便计算 2005×0.375-0.375×1949+3.75×2.4](/uploads/image/z/243816-24-6.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97+2005%C3%970.375-0.375%C3%971949%2B3.75%C3%972.4)
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
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
2005*-0.375*1949+3.75*2.4=(2005-1949+24)*0.375=80*0.375=30
用计算器算
原式=0.375X(2005-1949加24)=0.375X32=0.375X4X4X2=9
140.16
2005×0.375-0.375×1949+3.75×2.4=2005×0375-1949×0.375+24×0.375=(2005-1949+24)×0.375=80×0.375=80×3/8=30