4.6×28+0.28×5.4的简便计算?
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答案是 简便运算 4.6x28+0.28x5.4 =4.6x(30-2)+(0.3-0.02)x5.4 =4.6x30-4.6x2+0.3x5.4-0.02x5.4 =138-9.2+1.62-0.108 =130. 312
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4.6×28+0.28×5.4的简便计算?
答案是 简便运算 4.6x28+0.28x5.4 =4.6x(30-2)+(0.3-0.02)x5.4 =4.6x30-4.6x2+0.3x5.4-0.02x5.4 =138-9.2+1.62-0.108 =130. 312
答案是 130.312简便运算 4.6x28+0.28x5.4 =4.6x(30-2)+(0.3-0.02)x5.4 =4.6x30-4.6x2+0.3x5.4-0.02x5.4 =138-9.2+1.62-0.108 =130. 312
运用数学拆分的思想,28=30-2,0.28=0.3-0.02,再进行乘法运算,最后进行加减运算,最后计算结果是130.312