7.816×1.45+31点4×0.2184+1点69×7.816简便运算
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咨询记录 · 回答于2023-07-02
7.816×1.45+31点4×0.2184+1点69×7.816简便运算
您好,7.816×1.45+31点4×0.2184+1点69×7.816简便运算=7.86x1.45+3.14x2.14+1.69x7.86=7.86x1.45+1.69x7.86+3.14x2.184=7.86x(1.45+1.69)+3.14*2.14=7.86*3.14+2.14*3.14=3.14*(7.86+2.14)=3.14*10=31.4