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二年级数学下册三《生活中的大数》有多少个字练习北师大版.doc

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1第五节 有多少个字1 估一估，姚明哥哥有多高？快乐学习2估一估，有多少只蚂蚁？3估一估，果汁有多少毫升？24估一估，小乌龟还要再爬多少米才能到达学校？5估一估，有多少只鸭子？6估一估，大树有多高？拓展练习37有多少片树叶？8估一估，下面的纸条有多少厘米？9估一估，路边还能栽几棵树？答案与与点拨1.2 米2. 160 只3. 2004. 400 米5. 200 只6.6 米748.6 厘米9.4 棵

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