3.14×31.4+628×0.686+68.6×6.86
简便计算.3.14×31.4+628×0.686+68.6×6.86要步骤,最好详细一点,好就加分今晚就要!!!!!!!!!!!!!!!!!!!!!!!!!!数学题,我在...
简便计算.3.14×31.4+628×0.686+68.6×6.86
要步骤,最好详细一点,好就加分
今晚就要!!!!!!!!!!!!!!!!!!!!!!!!!!
数学题,我在线等!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 展开
要步骤,最好详细一点,好就加分
今晚就要!!!!!!!!!!!!!!!!!!!!!!!!!!
数学题,我在线等!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 展开
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=3.14*100*31.4/100+628*0.686+68.6*10*6.86/10
=314*0.314+628*0.686+686*0.686
=314*0.314+(628+686)*0.686
=314*0.314+1314*0.686
=314*0.314+(314+1000)*0.686
=314*0.314+314*0.686+686
=314+686
=1000
=314*0.314+628*0.686+686*0.686
=314*0.314+(628+686)*0.686
=314*0.314+1314*0.686
=314*0.314+(314+1000)*0.686
=314*0.314+314*0.686+686
=314+686
=1000
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