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2022年人教版小学数学三年级上册第六单元知识点和练习 .pdf

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1、学习好资料欢迎下载三年级数学上册培优课 11.30 授课老师：老师学生姓名：培优内容：第六单元多位数乘一位数知识点：一、口算乘法掌握整十，整百乘一位数的口算乘法先把整十整百数 0 前面的数与一位数相乘，计算出积后，再看因数末尾有几个 0,就在积的末尾添上几个0。二、乘法估算掌握两、三位数乘一位数的估算方法把两、三位数看作与它接近的整十、整百数，再与一位数相乘三、笔算乘法（1）多位数乘一位数（不进位）的笔算乘法：把一位数写在多位数下面，与多位数个位对齐。从个位起，用一位数依次去乘多位数每一位上的数，哪一位上的数相乘，就在横线下对着那一位写积。（2）多位数乘一位数（要进位）的笔算乘法：相同的数位对

2、齐，从个位乘起，用一位数分别乘多位数每一位上的数，哪一位上的乘积满几十就向前一位进几。（3）一个因数中间有0 的乘法：从个位起，用一位数依次乘另一个因数每一位上的数，在与中间的0 相乘时，如果没进上来的数，要在那一位上写 0 占位，如果有进上来的数必须加上。（4）一个因数末尾有0 的乘法：可先用一位数去乘0 前面的数，再看因数末尾有几个0,就在积的末尾添上几个0。学习好资料欢迎下载数学培优课堂练习题（注带*的为提升题）一、填空。1、60 是（）个十，6 个十乘 4 得（）个十，就是（）。2、12 560，12 和 5 都是乘法中的（）数，60 是乘法中的（）。3、6 个 418的和是多少？列式

3、与得数是（）。4、计算 400 7 时，想法是：4 乘以 7 得 28,在末尾添（）个 0,就得到 400 7 的积了，是（）。5、要使“341”的积是三位数，内最大可以填（）；要使积是四位数，内最小可填（）。6、三位数乘以一位数，积可能是（）位数，也可能是（）位数。7、对折 3 次后的绳子长度是5 厘米，这根绳子长是（）厘米。8*、小苗看一本 105 页的连环画，第一天看10 页，第二天看的页数是第一天的 2 倍，第三天应从第（）页看起。二、判断。1、一个三位数乘 1，所得的积还是三位数。（）2、在乘法里，积一定比其中的一个因数大。（）3、已知 AB0，可以确定 A、B 两个数中至少有一个是

4、0。（）4*、一个因数不变，另一个因数扩大到原来的3 倍，它们的积也扩大到原来的 3 倍。（）三、选择。1、不计算，比较大小，879 5（）879 8。文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9

5、T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码

6、:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9

7、T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码

8、:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9

9、T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码

10、:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7学习好资料欢迎下载 A、B、C、2*、a 5b 3，则 a与 b 的关系是()。A、B、C、D、无法比较3、480 2 6 的结果与算式（）的结果相等。A、480 4 B、480 8 C、480 12 四、计

11、算1、估算。398 4 502 2 983 7 2、口算。260172830241310450701024700 49340 3、列竖式计算。235 7 640 5 207 5 四、解决问题。1、一辆自行车的价格是358 元，妈妈带 1000 元买 3 辆自行车够吗？2*、学校图书室买回科技书240 本，文艺书 320 本。买回的故事书是科技书和文艺书本数的和的3 倍，买回的故事书有多少本？文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D

12、9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编

13、码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D

14、9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编

15、码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D

16、9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编

17、码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D

18、9T5X3 ZH3R1I6F1Y7学习好资料欢迎下载三年级培优数学作业题 11.30 姓名：（注带*的为提升题）家长签名：1、0 和任何数相乘都得（）。2、最大的一位数乘最小的三位数，积是（）。3、有一个三位数，百位上是1,十位上是 5,个位上是 0,它的 3 倍是（）。4*、算式 XY153，当 Y 为最大一位数时，X（），当 Y为最小的一位数时，X（）。5、列竖式计算436 6390 86、列式计算：一个数比 145的 4 倍少 68，这个数是多少？7、一箱苹果 15 千克，8 箱这样的苹果一共重多少千克？8*、4、5、8、0 这四个数字按下面要求组成不同的三位数乘一位数的乘法算式（每

19、个数字只能用一次）（1）积的末尾没有 0；（2）积的末尾有 1 个 0；文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9

20、T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码

21、:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9

22、T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码

23、:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9

24、T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码

25、:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7学习好资料欢迎下载（3）积的末尾有 2 个 0 文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7

26、文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4

27、T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7

28、文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4

29、T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7

30、文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4

31、T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7文档编码:CO9P1Z5X3Y7 HW4T2D9T5X3 ZH3R1I6F1Y7

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关键词：: 2022年人教版小学数学三年级上册第六单元知识点和练习 2022 年人教版小学数学三年级上册第六单元知识点练习

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