加法交换律和结合律简便计算Word格式.docx
- 文档编号:13205817
- 上传时间:2022-10-08
- 格式:DOCX
- 页数:20
- 大小:21.10KB
加法交换律和结合律简便计算Word格式.docx
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261+144+239+156=(______+______)+(______+______)=______+______=______
548+(378+52)=(______+______)+______=______+______=______
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353+59+41+347=(______+______)+(______+_____
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 加法 交换 结合律 简便 计算