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ID:49825322
大小:1.12 MB
页数:10页
时间:2020-02-28
《加、减法估算课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、加减法的估算12元28元老师带的钱够吗?508010707050热水瓶28元水壶43元玻璃杯24元我只带了100元钱,够吗?例4热水瓶28元水壶43元水壶比热水瓶大约贵多少元?1、估计大约有多少棵树苗?(一个小点代表一棵树苗)⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙现在小明大约有多少枝水彩笔?谈谈你的收获?
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