用简便方法计算下面各题.3.8×6.7+3.3×3.81.28×0.29-0.29×0.28101×4.8 ...
用简便方法计算下面各题.3.8×6.7+3.3×3.81.28×0.29-0.29×0.28101×4.856×12.5×2....
用简便方法计算下面各题.3.8×6.7+3.3×3.81.28×0.29-0.29×0.28101×4.8 56×12.5×2.
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