1.25×(8+0.2)×2.5的简便运算
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答案25.625,简便计算。 1.25x(8+0.2)x2.5 =1.25x(8x2.5+0.2x2.5) =1.25x(20+0.5) =1.25x20.5 =25.625
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1.25×(8+0.2)×2.5的简便运算
好的好的。
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答案25.625,简便计算。 1.25x(8+0.2)x2.5 =1.25x(8x2.5+0.2x2.5) =1.25x(20+0.5) =1.25x20.5 =25.625
答案25.625,简便计算。 1.25x(8+0.2)x2.5 =1.25x(8x2.5+0.2x2.5) =1.25x(20+0.5) =1.25x20.5 =25.625
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还有一种方法
答案25.625,简便计算。 1.25x(8+0.2)x2.5 =(1.25x8+1.25x0.2)x2.5 =(10+0.25)x2.5 =10x2.5+0.25x2.5 =25+0.625 =25.625
答案25.625,简便计算。 1.25x(8+0.2)x2.5 =1.25x(8x2.5+0.2x2.5) =1.25x(20+0.5) =1.25x20+1.25x0.5 =25+0.625 =25.625