7.4*1.12+0.73*8.8的简便算法咋算,急
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![7.4*1.12+0.73*8.8的简便算法咋算,急](/uploads/image/z/244130-50-0.jpg?t=7.4%2A1.12%2B0.73%2A8.8%E7%9A%84%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%E5%92%8B%E7%AE%97%2C%E6%80%A5)
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7.4*1.12+0.73*8.8的简便算法咋算,急
7.4*1.12+0.73*8.8的简便算法咋算,急
7.4*1.12+0.73*8.8的简便算法咋算,急
7.4*1.12+0.73*8.8
=7.3*1.12+0.1*1.12+7.3*0.88
=7.3*(1.12+0.88)+0.112
=7.3*2+0.112
=14.6+0.112
=14.712
7.4*1.12+0.73*8.8=7.4*1.12+(0.74-0.01)*8.8=7.4*1.12+(7.4-0.1)*0.88=7.4*1.12+7.4*0.88-0.088=7.4*(1.12+0.88)-0.088=7.4*2-0.88=14.712