课程范围与来源
按旧版沪教六年级上册第二章顺序，覆盖 2.8 分数、小数的四则混合运算，含括号、同级顺序、精确互化、运算律、错因辨析与生活应用。后续接2.9分数运算的应用。例子、讲稿、练习由本项目编写，未嵌入教材扫描图片。
出版社配套书目录 · 图形工具与许可。本页可离线使用，不连接实时模型。
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