题目

简便计算：4.7×0.35＋0.47×4.2＋0.047×23= 答案：【1】解：4.7×0.35＋0.47×4.2＋0.047×23=4.7×0.35＋4.7×0.42＋4.7×0.23=(0.35＋0.42＋0.23)×4.7=1×4.7=4.7

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