三年级数学下册六《认识分数》比大小基础练习(一)北师大版.doc

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1比大小1.按分数先涂上颜色,再比较大小。 1. 看图写出分数,并比较大小。( ) ( )( ) ( )( ) ( )3.判断。(1) 千克铁比 千克棉花重。 ( )(2)分母相同的分数,分子大的分数值也大。 ( )(3)1 可以写成无数个分子和分母相同的分数。 ( )(4) 比 1 大。 ( )(5)一张长方形纸的 和一张正方形纸的 大小相等。 ( )答案1.(涂色略) (1)(2)22.(1) (2) (3) 28 38 36 46 59 493.(1) (2) (3) (4) (5)

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