4.2×2.6+1.3x1.5+0.13简便运算
4.2×2.6+1.3x1.5+0.13简便运算如下：4.2×2.6+1.3x1.5+0.13=4.2×2×1.3+1.3×1.5+1.3×0.1=8.4×1.3+1.3×1.5+1.3×0.1=(8.4+1.5+0...
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4.2×2.6+1.3x1.5+0.13简便运算如下：4.2×2.6+1.3x1.5+0.13=4.2×2×1.3+1.3×1.5+1.3×0.1=8.4×1.3+1.3×1.5+1.3×0.1=(8.4+1.5+0...
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