三年级数学下册七《数据的整理和表示》快乐成长课堂作业北师大版.doc

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1快乐成长备选练习1调查你们班同学的身高情况,利用下图整理数据。( )班同学身高情况观察上图,你能获得哪些信息?2下面是根据三(1)班同学周末做家务时间画的图。(1)根据上图填一填。做家务时间(分)10 15 20 25 30 35 40 45 50 55 60人数(2)你知道三(1)班一共有多少名同学吗?(3)如果小学生的科学做家务时间应为 30 分,你对调查结果有什么想法?(4)调查自己班同学周末做家务的时间,并作出图来,与三(1)班的同学对比,两个班同学的周末做家务时间有什么不同?答案1略2(1)2 3 3 5 8 5 3 2 2 1 1(2)35 名 (3)略 (4)略2

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