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三年级数学下册六《认识分数》吃西瓜基础练习（一）北师大版.doc

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1吃西瓜1. 看图计算。 14+2=（ ）48+3=（ ）2.计算。25+1= 7+2= 58+1=89+ = 4+ = 47+2=3.一袋大米，第一天吃了 9千克，第二天比第一天少吃了 19千克，第二天吃了多少千克？答案1.（1） （2）34 782. 1 1 35 57 68 673. - = （千克）4919392

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