81.4-16.22+20.86-3.82+递等式计算
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答案是82.22,递等式计算:81.4-16.22+20.86-3.82=(81.4+20.86)-(16.22+3.82)=102.26-20.04=82.22,运用加减的结合律,先计算81.4+20.86=102.26, 16.22+3.82=20.04,最后计算102.26-20.04=82.22
咨询记录 · 回答于2023-06-02
81.4-16.22+20.86-3.82+递等式计算
答案是82.22,递等式计算:81.4-16.22+20.86-3.82=(81.4+20.86)-(16.22+3.82)=102.26-20.04=82.22,运用加减的结合律
答案是82.22,递等式计算:81.4-16.22+20.86-3.82=(81.4+20.86)-(16.22+3.82)=102.26-20.04=82.22,运用加减的结合律,先计算81.4+20.86=102.26, 16.22+3.82=20.04,最后计算102.26-20.04=82.22
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47.85+2.034-19.875+41.66 递等式计算
47.85+2.034-19.875+41.66=47.85+41.66+2.034-19.875=89.51+2.034-19.875=91.544-19.875=71.669