460×42+580×54简便方法怎么算
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答案50640,计算过程。 460x42+580x54 =46x420+580x54 =46x420+(420+160)x54 =46x420+420x54+160x54 =420x(46+54)+160x54 =420x100+160x54 =42000+160x(50+4) =42000+160x50+160x4 =42000+8000+640 =50000+640 =50649
咨询记录 · 回答于2022-11-01
460×42+580×54简便方法怎么算
好了吗?好了吗?
答案50640,计算过程。 460x42+580x54 =46x420+580x54 =46x420+(420+160)x54 =46x420+420x54+160x54 =420x(46+54)+160x54。
这个过程有点长
答案50640,计算过程。 460x42+580x54 =46x420+580x54 =46x420+(420+160)x54 =46x420+420x54+160x54 =420x(46+54)+160x54 =420x100+160x54 =42000+160x(50+4) =42000+160x50+160x4 =42000+8000+640 =50000+640 =50649
答案50640,计算过程。 460x42+580x54 =46x420+580x54 =46x420+(420+160)x54 =46x420+420x54+160x54 =420x(46+54)+160x54 =420x100+160x54 =42000+160x(50+4) =42000+160x50+160x4 =42000+8000+640 =50000+640 =50640
答案50640,计算过程。 460x42+580x54 =46x420+580x54 =46x420+(420+160)x54 =46x420+420x54+160x54 =420x(46+54)+160x54 =420x100+160x54 =42000+160x(50+4) =42000+160x50+160x4 =42000+8000+640 =50000+640 =50640
答案50640
运用数学拆分的思想