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计算:4.82×0.59+0.41×1.59-0.323×5.9=.
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计算:4.82×0.59+0.41×1.59-0.323×5.9= ____ .
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答案和解析
分析:将4.82×0.59+0.41×1.59-0.323×5.9变形为4.82×0.59-3.23×0.59+0.41×1.59,再两次运用乘法分配律简便计算.4.82×0.59+0.41×1.59-0.323×5.9,=4.82×0.59-3.23×0.59+0.41×1.59,=(4.82-3.23)×0.59+0.41×1.59,=1.59×0.59+0.41×1.59,=1.59×(0.59+0.41),=1.59×1,=1.59.故答案为:1.59.点评:考查了四则混合运算中的巧算,注意灵活运用积不变规律,运算律简便计算.
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