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一年级数学下册第1单元加与减（一）《开会啦》习题课件（新版）北师大版.ppt

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开会啦,1进一步理解加与减之间的关系 2解决“差多少”的实际问题,1( )里填几？ 7( )15 15( )7 6( )13 13( )6 9( )16 16( )9,8,8,7,7,7,7,2还差几块？,11,6,5,3.(1)一双筷子配一个碗，还缺几双筷子？(2)再提出一个数学问题，并解答。 问题：_,12,9,3,一个碗配一个勺，还缺几个勺？,12,6,6,个,4在 里填数，使每条线的三个数相加的和是12。,3,5,6,

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