42.3×0.73+2.7×4.23简便计算方法？
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先将42.3分解成4.23×10，然后再提取4.23就可以达到简便运算的目的了，计算过程如下：
42.3×0.73+2.7×4.23
=4.23×10×0.73+2.7×4.23
=4.23×7.3+2.7×4.23
=4.23×（7.3+2.7）
=4.23×10
=42.3
42.3×0.73+2.7×4.23
=4.23×10×0.73+2.7×4.23
=4.23×7.3+2.7×4.23
=4.23×（7.3+2.7）
=4.23×10
=42.3
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42.3×0.73+2.7×4.23
=4.23×（10×0.73）+2.7×4.23
=4.23×7.3+2.7×4.23
=4.23×（7.3+2.7）
=4.23×10
=42.3
=4.23×（10×0.73）+2.7×4.23
=4.23×7.3+2.7×4.23
=4.23×（7.3+2.7）
=4.23×10
=42.3
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解:42.3×0.73+2.7×4.23
=4.23×10×0.73+2.7×4.23
=4.23×7.3+2.7×4.23
=4.23×（7.3+2.7）
=4.23×10
=42.3
=4.23×10×0.73+2.7×4.23
=4.23×7.3+2.7×4.23
=4.23×（7.3+2.7）
=4.23×10
=42.3
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42.3×0.73+2.7×4.23
=42.3×0.73+0.27×42.3
=42.3×（0.73+0.27）
=42.3×1
=42.3
=42.3×0.73+0.27×42.3
=42.3×（0.73+0.27）
=42.3×1
=42.3
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解：原式=42.3×（0.73+2.7）=42.3×3.43=145.089
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