作业帮简便计算 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：2024/11/06 08:29:34
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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