三年级数学下册六《认识分数》分一分(二)一课三练北师大版.doc

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1分一分(二)淘淘猫导学基础碰碰车知识点 用分数表示由多个个体组成的整体中的一份或若干份1填一填。(1)6 个苹果平均分给 3 人吃,每人吃这些苹果的 ( )( ) ,每人吃( )个。(2)一年级(1)班少先队员中有 5 名男生,4 名女生。男生占少先队员总数的 ( )( ) ,女生占少先队员总数的 ( )( ) 。(3) 每一份是这条线段的 ( )( ) ,3 份是这条线段的 ( )( ) ,4 份是这条线段的( )( )。2.将正确答案的序号填在括号里。(1)下列图形的阴影部分不能用分数表示的是( )。(2)把一张纸连续对折 3 次,再打开,每一份是这张纸的( )。(3)一袋苹果取出了 3 个,正好取出了它的吉,这袋苹果原来有( )个。4 5 6升级跷跷板3用分数表示下面每幅图中每种图案的个数占全部的几分之几。2智慧摩天轮4按分数圈一圈。答案与点拨1(1) 3 2 (2) 95 4 (3)1 53 42(1) (2) (3)3苹果 7 桃子 1,胡萝卜 茄子 9,梨 12草莓 5 菠萝 1234.圈 9 个,圈 5 个3

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