28.6×10.1-2.86用简便方法计算在8点之前回答有100分
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:综合作业 时间:2024/07/22 09:31:26
28.6×10.1-2.86用简便方法计算在8点之前回答有100分
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![28.6×10.1-2.86用简便方法计算在8点之前回答有100分](/uploads/image/z/6190150-22-0.jpg?t=28.6%C3%9710.1-2.86%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%E5%9C%A88%E7%82%B9%E4%B9%8B%E5%89%8D%E5%9B%9E%E7%AD%94%E6%9C%89100%E5%88%86)
28.6×10.1-2.86
=28.6×10.1-28.6x0.1
=28.6×(10.1-0.1)
=28.6x10
=286
=28.6×10.1-28.6x0.1
=28.6×(10.1-0.1)
=28.6x10
=286